I recompiled the Tiny source (Tiny_Avr-Pic_Bootloader+ (v0.8.2)) using VS 2012 and accepted all the changes the VS software wanted to make and the code compiled 100%.
I created a release build and ran it creating ...

Tiny_Avr-Pic_Bootloader+.application
Tiny_Avr-Pic_Bootloader+.exe
Tiny_Avr-Pic_Bootloader+.exe.manifest
Tiny_Avr-Pic_Bootloader+.pdb
Tiny_Avr-Pic_Bootloader+.vshost.exe

IF I run the file called "Tiny_Avr-Pic_Bootloader+.application", I get the following error log file.

PLATFORM VERSION INFO
    Windows             : 6.1.7601.65536 (Win32NT)
    Common Language Runtime     : 4.0.30319.18052
    System.Deployment.dll         : 4.0.30319.17929 built by: FX45RTMREL
    clr.dll             : 4.0.30319.18052 built by: FX45RTMGDR
    dfdll.dll             : 4.0.30319.17929 built by: FX45RTMREL
    dfshim.dll             : 4.0.41209.0 (Main.041209-0000)

SOURCES
    Deployment url            : file:///W:/SpockPrimary/MPLAB%20Working%20Projects/Bootloading%20stuff/bootloader/bootloader-18f/Tiny%20%20PC%20boot%20installers/Tiny_Avr-Pic_Bootloader+.application
    Application url            : file:///W:/SpockPrimary/MPLAB%20Working%20Projects/Bootloading%20stuff/bootloader/bootloader-18f/Tiny%20%20PC%20boot%20installers/Tiny_Avr-Pic_Bootloader+.exe.manifest

IDENTITIES
    Deployment Identity        : Tiny_Avr-Pic_Bootloader+.application, Version=1.0.0.1, Culture=neutral, PublicKeyToken=0000000000000000, processorArchitecture=msil
    Application Identity        : Tiny_Avr-Pic_Bootloader+.exe, Version=1.0.0.1, Culture=neutral, PublicKeyToken=0000000000000000, processorArchitecture=msil, type=win32

APPLICATION SUMMARY

    * Installable application.

ERROR SUMMARY
    Below is a summary of the errors, details of these errors are listed later in the log.

    * Activation of W:\SpockPrimary\MPLAB Working Projects\Bootloading stuff\bootloader\bootloader-18f\Tiny  PC boot installers\Tiny_Avr-Pic_Bootloader+.application resulted in exception. Following failure messages were detected:
        + Downloading file:///W:/SpockPrimary/MPLAB Working Projects/Bootloading stuff/bootloader/bootloader-18f/Tiny  PC boot installers/Tiny_Avr-Pic_Bootloader+.exe.deploy did not succeed.
        + Could not find file 'W:\SpockPrimary\MPLAB Working Projects\Bootloading stuff\bootloader\bootloader-18f\Tiny  PC boot installers\Tiny_Avr-Pic_Bootloader+.exe.deploy'.
        + Could not find file 'W:\SpockPrimary\MPLAB Working Projects\Bootloading stuff\bootloader\bootloader-18f\Tiny  PC boot installers\Tiny_Avr-Pic_Bootloader+.exe.deploy'.
        + Could not find file 'W:\SpockPrimary\MPLAB Working Projects\Bootloading stuff\bootloader\bootloader-18f\Tiny  PC boot installers\Tiny_Avr-Pic_Bootloader+.exe.deploy'.

COMPONENT STORE TRANSACTION FAILURE SUMMARY
    No transaction error was detected.

WARNINGS

    * The manifest for this application does not have a signature. Signature validation will be ignored.
    * The manifest for this application does not have a signature. Signature validation will be ignored.

OPERATION PROGRESS STATUS

    * [16/12/2013 11:48:52] : Activation of W:\SpockPrimary\MPLAB Working Projects\Bootloading stuff\bootloader\bootloader-18f\Tiny  PC boot installers\Tiny_Avr-Pic_Bootloader+.application has started.
    * [16/12/2013 11:48:58] : Processing of deployment manifest has successfully completed.
    * [16/12/2013 11:48:58] : Installation of the application has started.
    * [16/12/2013 11:48:58] : Processing of application manifest has successfully completed.
    * [16/12/2013 11:49:17] : Found compatible runtime version 4.0.30319.
    * [16/12/2013 11:49:17] : Request of trust and detection of platform is complete.

ERROR DETAILS
    Following errors were detected during this operation.

    * [16/12/2013 11:49:18] System.Deployment.Application.DeploymentDownloadException (Unknown subtype)
        - Downloading file:///W:/SpockPrimary/MPLAB Working Projects/Bootloading stuff/bootloader/bootloader-18f/Tiny  PC boot installers/Tiny_Avr-Pic_Bootloader+.exe.deploy did not succeed.
        - Source: System.Deployment
        - Stack trace:
            at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)
            at System.Deployment.Application.SystemNetDownloader.DownloadAllFiles()
            at System.Deployment.Application.FileDownloader.Download(SubscriptionState subState)
            at System.Deployment.Application.DownloadManager.DownloadDependencies(SubscriptionState subState, AssemblyManifest deployManifest, AssemblyManifest appManifest, Uri sourceUriBase, String targetDirectory, String group, IDownloadNotification notification, DownloadOptions options)
            at System.Deployment.Application.ApplicationActivator.DownloadApplication(SubscriptionState subState, ActivationDescription actDesc, Int64 transactionId, TempDirectory& downloadTemp)
            at System.Deployment.Application.ApplicationActivator.InstallApplication(SubscriptionState& subState, ActivationDescription actDesc)
            at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivation(Uri activationUri, Boolean isShortcut, String textualSubId, String deploymentProviderUrlFromExtension, BrowserSettings browserSettings, String& errorPageUrl)
            at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state)
        --- Inner Exception ---
        System.Net.WebException
        - Could not find file 'W:\SpockPrimary\MPLAB Working Projects\Bootloading stuff\bootloader\bootloader-18f\Tiny  PC boot installers\Tiny_Avr-Pic_Bootloader+.exe.deploy'.
        - Source: System
        - Stack trace:
            at System.Net.FileWebRequest.EndGetResponse(IAsyncResult asyncResult)
            at System.Net.FileWebRequest.GetResponse()
            at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)
        --- Inner Exception ---
        System.Net.WebException
        - Could not find file 'W:\SpockPrimary\MPLAB Working Projects\Bootloading stuff\bootloader\bootloader-18f\Tiny  PC boot installers\Tiny_Avr-Pic_Bootloader+.exe.deploy'.
        - Source: System
        - Stack trace:
            at System.Net.FileWebResponse..ctor(FileWebRequest request, Uri uri, FileAccess access, Boolean asyncHint)
            at System.Net.FileWebRequest.GetResponseCallback(Object state)
        --- Inner Exception ---
        System.IO.FileNotFoundException
        - Could not find file 'W:\SpockPrimary\MPLAB Working Projects\Bootloading stuff\bootloader\bootloader-18f\Tiny  PC boot installers\Tiny_Avr-Pic_Bootloader+.exe.deploy'.
        - Source: mscorlib
        - Stack trace:
            at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
            at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
            at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy)
            at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean useAsync)
            at System.Net.FileWebStream..ctor(FileWebRequest request, String path, FileMode mode, FileAccess access, FileShare sharing, Int32 length, Boolean async)
            at System.Net.FileWebResponse..ctor(FileWebRequest request, Uri uri, FileAccess access, Boolean asyncHint)

COMPONENT STORE TRANSACTION DETAILS
    No transaction information is available.

IF I run the file "Tiny_Avr-Pic_Bootloader+.exe" I assume all the changes I accepted from VS2012 come home to roost.
I get ...

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.ArgumentOutOfRangeException: InvalidArgument=Value of '0' is not valid for 'SelectedIndex'.
Parameter name: SelectedIndex
   at System.Windows.Forms.ListBox.set_SelectedIndex(Int32 value)
   at TinyPicBootloader.Form1.Form1_Load(Object sender, EventArgs e) in c:\Users\Rick\Documents\Visual Studio 2012\Projects\Tiny_Avr-Pic_Bootloader+ (v0.8.2)\sources_soft_PC\TinyPicBootloader\Form1.cs:line 2413
   at System.Windows.Forms.Form.OnLoad(EventArgs e)
   at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
   at System.Windows.Forms.Control.CreateControl()
   at System.Windows.Forms.Control.WmShowWindow(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.Form.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


************** Loaded Assemblies **************
mscorlib
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.18052 built by: FX45RTMGDR
    CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/mscorlib.dll
----------------------------------------
Tiny_Avr-Pic_Bootloader+
    Assembly Version: 0.8.2.0
    Win32 Version: 0.8.2.0
    CodeBase: file:///W:/SpockPrimary/MPLAB%20Working%20Projects/Bootloading%20stuff/bootloader/bootloader-18f/Tiny%20%20PC%20boot%20installers/Tiny_Avr-Pic_Bootloader+.exe
----------------------------------------
System.Windows.Forms
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.18047 built by: FX45RTMGDR
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Drawing
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.18021 built by: FX45RTMGDR
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System
    Assembly Version: 4.0.0.0
    Win32 Version: 4.0.30319.18044 built by: FX45RTMGDR
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
    <system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.

All I need is some PC code that will program my PIC, I am not yet experienced enough with C# to be debugging code I have no understanding of how it works.
I am reluctant to run (or execute) any more of the files as I do not want to hurt my main design machine.

My specifications, once I get anything working is ...
PIC18F4560 running with 3.579545 meg external Xtal and communication at 9600 baud.

movlw    b'01001000'    ; BRG16 = 1 (bit3)
movwf    BAUDCON        ;

movlw    .92        ; 103 x 3579545 / 4000000 = 9621.22 baud
movwf    SPBRG
movlw    b'10100100'    ; async tx 8 bit, brgh=1 9600 baud
movwf    TXSTA

I am SO out of my depth it is embarrassing.
Any thoughts to get at least the PC end working?
Having 'OK'd the PC error messages, I do get the main Tiny Window but, as you can appreciate, not much works.

Thanks in advance for what must be a simple answer for you but leaves me clueless..
I have been programming PICs in assembler for about 15 years and just past 60 years of age.
Old dogs and new tricks ?

Rick