If you are using older version of Videozilla and having problem to upgrade to version 2, try the following steps:
1) Remove the old version
2) Check the installation folder of Videozilla, delete all remaining files
3) Click on the start windows, select run
4) Type "regsvr32 -u shctxex.dll" and click on ok button
5) Reboot your pc
6) Delete shctxex.dll, it should located on your System folder; eg. C:\Windows\System32 folder
7) Install the latest version.
Best Regards;
Rick
Softdiv Software