Try this...
1. Uninstall Tube Toolbox using Windows Control Panel (it it is listed)
2. Delete everything in the C:\Program Files\Sincell\Tube Toolbox folder or C:\Program Files (x86)\Sincell\Tube Toolbox (if you have a 64 bit computer)
3. Download the software again -
www.tubetoolbox.com/download.aspx4. Re-Install
This does not affect any data you may have.
If that does not work, send an email to
support@tubetoolbox.com and reference this forum post. We will send you some files to manual install.