Tried installing as admin, and not as admin, and also latest beta of v2.6... it still crashes.
Don't know about building, not a programmer, only good with GUIs. I'll have a look though JIC.
Here's last error report in case it is useful for the developer/s...
Problem Event Name: APPCRASH
Application Name: avidemux.exe
Application Version: 18.104.22.16819
Application Timestamp: 4efe033a
Fault Module Name: msvcrt.dll
Fault Module Version: 7.0.7600.16385
Fault Module Timestamp: 4a5bda6f
Exception Code: c0000005
Exception Offset: 0000996a
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 3081
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789
Thanks for your suggestions.