Hello mpfirnhaber,
Please try to reinstall Video Splitter - possibly some components from the old version were not replaced while reinstallation.
Please do not forget to close application before the reinstallation. What is your operating system? Do you get this freezing again on adding the file from the Media to the Timeline, right?
I recommend to try to uninstall it from your computer at first (you can use Start -> All programs -> Solveig Multimedia -> SolveigMM Video Splitter Home Edition -> Uninstall or Windows Control Panel).
After uninstall please make sure that all files in the folders below were removed from your computer
"C:\Program Files\Solveig Multimedia\SolveigMM Video Splitter Home Edition"
and
"C:\Program Files\Common Files\Solveig Multimedia"
If there will be any files in this folders please delete them manually from these folders.
Then you could install the product again.
Please use the link below to download the latest version 6.0.1609.2. We have tested this version on several our computers, and have not reproduced the freezing on all editing steps.
http://www.solveigmm.com/download/SolveigMM_Video_Splitter_Home_Edition_6_0_Beta.exehttp://www.solveigmm.com/download/SolveigMM_Video_Splitter_Business_Edition_6_0_Beta.exe