Error, "procedure entry point could not be located in dynamic link library"

[professorspork]

Hello all,

I am a complete tech novice who downloaded avidemux for a video editing project upon the recommendation of a friend. While the installation (Windows 7, 64-bit) seemed to go just fine, every time I launch the program and attempt to open a video I get the following error message:

The procedure entry point ?absoluteDir@QFileInfo@@QEBA?AVQDir@@XZ could not be located in the dynamic link library Qt5Core.dll

This error shows up twice, but then the program seems to run normally... until I try to save my work, at which point I get this error:

Exceptionfilter
The application has encountered a fatal problem
The current editing has been saved and will be reloaded at next start.

I've tried uninstalling and reinstalling several times, with no luck. Qt5Core.dll is in the appropriate folder, as far as I can tell, and I even made a second copy of the program files and put them in ProgramFiles (x86) to see if that would help.

I'd appreciate any insight; I figure if you all can't help me, no one can!

[mean]

No idea