Crash on new plugin when opening plugin manager and if link is present

• Mar 13, 2015 - 13:17
Type
Plugins
Severity
S3 - Major
Status
closed
Project
MuseScore

Windows 7 (Enterprise, 64bit), MuseScore 2.0 RC (but most probably earlier releases too)

  1. start MuseScore
  2. create a link in the private plugin directory (Alt-drag in Explorer, a real pity that Windows doesn't porperly support hard or soft links like Linux)
  3. copy a plugin into the private plugin folder
  4. start plugin manager

expected result: the new plugin shows up in the list of selectable plugin, possibly even the one the link points at.

actual result: crash

After restart that plugin does show up in plugin manager and works too.
Tested with 2 different plugins, colorvoices and notenames

It is a crash, but pretty much a rare corner case I guess, so only major ;-)

No stack trace only this:

Debug: Collect meta for <.../Plug-Ins/ColorVoices.qml> (...\MuseScore\mscore\mscorePlugins.cpp:463, void Ms::collectPluginMetaInformation(Ms::PluginDescription*))
Fatal: ASSERT failure in QList::operator[]: "index out of range", file C:/Qt/5.4/mingw491_32/include/QtCore/qlist.h, line 486 (:0, )

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

Comments

• Mar 16, 2015 - 22:19
Status (old) active ⇒ needs info

Actually, I cannot reproduce reliably, although I saw it once.

Would it be possible to get a more precise series of steps starting from a factory reset? I think it probably depends on things like whether you have already run the Plugin Manager during this session, whether MuseScore has already written & read preferences, etc.

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• Mar 17, 2015 - 03:34
Title Crash on new plugin when openiong plugin manager and if link is present ⇒ Crash on new plugin when opening plugin manager and if link is present

Reply

• Mar 17, 2015 - 08:13
Status (old) needs info ⇒ active
  1. delete C:\Users\USER\AppData\Local\MuseScore\MuseScoreDevelopment\plugins.xml
  2. empty C:\Users\USER\Documents\MuseScoreDevelopment\Plug-Ins
  3. start MuseScore
  4. create any link in C:\Users\USER\Documents\MuseScoreDevelopment\Plugins
  5. copy valid plugin to C:\Users\USER\Documents\MuseScoreDevelopment\Plugins
  6. open Plugin Manager

--> crash

Reply

• Mar 17, 2015 - 08:44

I can't reproduce. Jojo on IRC mentioned that it can't reliably reproduce either.
Link are just .lnk files on windows so they should be skipped.

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• Mar 17, 2015 - 13:25

I can't see how LNK files could affect things, and I also couldn't replicate the problem, but I wonder if the problem has to do with moving/changing plugins while MS is running.

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