Simplify3D User Forum

hi... until recently it worked fine, now each time i start it up it crashes, i've had some power outages recently, but everything else works fine.

You could try following the instructions here:
https://www.simplify3d.com/support/faq/#faq-4628

thanks the logs says this:
Faulting application name: SIMPLI~1.EXE, version: 4.0.0.0, time stamp: 0x597095a0
Faulting module name: Qt5Gui.dll, version: 5.6.2.0, time stamp: 0x594bc8af
Exception code: 0xc0000005
Fault offset: 0x000000000007a6b6
Faulting process id: 0x4c8
Faulting application start time: 0x01d396aa29e3b8ba
Faulting application path: C:\PROGRA~1\SIMPLI~1.0\SIMPLI~1.EXE
Faulting module path: C:\PROGRA~1\SIMPLI~1.0\Qt5Gui.dll
Report Id: 6b6cb18c-029d-11e8-b634-00090ffe0001

Looks like you're using 4.0.0. Try logging into your account on the S3D website and download 4.0.1. That may solve the issue.

If not, the try following the link I already posted above.