#7 Error loading contact list

Adding group: DPI-2001
Adding group: DPI-199x
Adding group: DPI-2004
Adding group: DPI-2003
Adding group: DPI-2005
Adding group: Buddies
Adding group: DPI-2002
Adding group: DPI-2000
Adding group: DEA

Unhandled Exception: System.ArgumentException: parsing "(??\$\d{1,2}|??\$#[0-9_a-fA-F]{6})" - Bad grouping construct.
Parameter name: (??\$\d{1,2}|??\$#[0-9_a-fA-F]{6})
at System.Text.RegularExpressions.Syntax.Parser.ParseGroupingConstruct (System.Text.RegularExpressions.RegexOptions&) <0x00bc2>
at System.Text.RegularExpressions.Syntax.Parser.ParseGroup (System.Text.RegularExpressions.Syntax.Group,System.Text.RegularExpressions.RegexOptions,System.Text.RegularExpressions.Syntax.Assertion) <0x00589>
at System.Text.RegularExpressions.Syntax.Parser.ParseRegularExpression (string,System.Text.RegularExpressions.RegexOptions) <0x00093>
at System.Text.RegularExpressions.Regex.Init () <0x00090>
at System.Text.RegularExpressions.Regex..ctor (string,System.Text.RegularExpressions.RegexOptions) <0x0002e>
at System.Text.RegularExpressions.Regex..ctor (string) <0x0001d>
at MonkeyMSN.Utils.GuiUtils.ParseMsnPlusName (string) <0x00b77>
at MonkeyMSN.Widgets.ContactList.GetNameMarkup (MSNPSharp.Contact) <0x00054>
at MonkeyMSN.Widgets.ContactList.GetContactValues (MSNPSharp.Contact) <0x00066>
at MonkeyMSN.Widgets.ContactList.AddContact (MSNPSharp.Contact) <0x000eb>
at <>c__CompilerGenerated4.<>c__AnonymousMethod51 (object,System.EventArgs) <0x000d6>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_EventArgs (object,System.EventArgs) <0x00059>
at InvokeCB.Invoke () <0x00022>
at (wrapper delegate-invoke) System.MulticastDelegate.invoke_bool () <0x00048>
at TimeoutProxy.Handler () <0x00045>
at (wrapper native-to-managed) TimeoutProxy.Handler () <0x0005a>
in (unmanaged) 0x2affad3d111d
at (wrapper managed-to-native) Gtk.Application.gtk_main () <0x0000b>
at Gtk.Application.Run () <0x00008>
at MonkeyMSN.Base.MonkeyMessenger..ctor () <0x001b4>
at MonkeyMSN.Base.MonkeyMessenger.Main (string[]) <0x00057>

Mono JIT compiler version 1.2.3.1, (C) 2002-2006 Novell, Inc and Contributors. www.mono-project.com
TLS: __thread
GC: Included Boehm (with typed GC)
SIGSEGV: normal
Architecture: amd64
Disabled: none

[Anonymous]

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user_id=1171393
Originator: YES

Compiling code with -codepage:utf8 the problem cannot be reproduced.

The exception would be when making to parser of string below to construct object Regex

Regex oldre = new Regex ("(·\\$\\d{1,2}|·\\$#[0-9_a-fA-F]{6})");