[Rosegarden-user] Matrix editor won't open

[Marcia S. <ra...@fr...>]

Hello!  I have been learning and enjoying this impressive program for a 
couple of days.  (I had used Cakewalk Pro Audio 4.0 way back in 1996 
which has helped reduce the learning curve for Rosegarden.)

Today I ran into some trouble that I don't know how to fix:  The matrix 
editor won't open anymore.   (It had been working fine.)

When I select a segment and press "M", or select the matrix editor on 
the toolbar, nothing happens.  I  tried a few files including a MIDI 
import and a saved RG file to see if the problem could be associated 
with data in a specific file, but the problem remains. Then I 
uninstalled and reinstalled Rosegarden.  It reinstalled okay, but my 
problem remains:  matrix editor won't open.

{Might this issue be related to a GUI issue that happened yesterday?  
Rosegarden was maximized (occupying the entire display except for the 
Unity toolbar along the left edge).  I double clicked Rosegarden's top 
line, or possibly dragged the frame Rosegarden was in, to resize its 
window.:  I wanted to display the matrix editor, segments canvas, and 
notation editor all in smaller windows.  The main Rosegarden window 
resized smaller, but started flashing and redrawing itself very 
rapidly.  In particular Rosegarden's top line -- I couldn't tell if it 
was the menu or toolbar -- kept redrawing in two positions:  line 1 then 
line 2, rapidly alternating (it was difficult to perform any GUI 
operations or see exactly which window element was involved, while the 
display was rapidly flashing).  I was able to somehow maximize 
Rosegarden again.  After maximized, Rosegarden appeared to return to 
normal function, and I did further editing in the matrix and notation 
editors.  The failure of the matrix editor to open may or may not be 
related to this other GUI situation.}

Versions:  Ubuntu 13.04 with all current software updates. Rosegarden 
12.12.25 from the Ubuntu Software Center.

If there is some way to remove or reset any faulty GUI settings 
associated with Rosegarden, and start fresh, that would be 
satisfactory.  I don't mind using Rosegarden full screen and avoiding 
the drag that started the GUI problem.

Again I am very appreciative of this wonderful, comprehensive, 
sophisticated program, and sorry that my first communication to the 
developers is because of an issue.

Regards,
Marcia