Opened 7 years ago

Last modified 5 years ago

#289 closed defect

Fix plugin load failures — at Version 2

Reported by: Dmitry A. Kuminov Owned by:
Priority: major Milestone: Qt 5
Component: General Version: 4.7.3
Severity: low Keywords:

Description (last modified by Dmitry A. Kuminov)

Qt core caches plugin information once it tries to load a Qt plugin. If, at this time, the plugin cannot be loaded (i.e. due to missing dependencies among DLLs), an entry saying that the plugin is invalid will be stored in the cache (and taken from there next time the plugin is loaded). This cache is not updated until the plugin DLL timestamp changes (or the cache is manually cleared). As a result, even if later all DLL dependencies are satisfied, Qt will still refuse to use it giving a message like "The file XXX.DLL is not a valid Qt plugin."

This is completely wrong and needs to be fixed. It's a generic Qt problem.

The workaround for this problem is to manually clear the cache entry for the plugin which is stored in %HOME%/.config/Trolltech.ini or just delete this file completely - it will be recreated next time a Qt application starts.

Change History (2)

comment:1 Changed 7 years ago by Dmitry A. Kuminov

See for one of the failing cases.

comment:2 Changed 7 years ago by Dmitry A. Kuminov

Description: modified (diff)
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