Hello tomfrank,
Please check is the update solve the issue and let us know the results
Just download, uzip and replace SMM_Trimmer.ax
Usually installator puts it to "C:\Program Files\Common Files\Solveig Multimedia" folder
The new file is available at this link:
www.solveigmm.com/files/utils/SMM_Trimmer_2009_11_08.zip
Thanks you fo the help and you file.