When removing Toad 6.0.1 I receive an error due to freeware.msi being not found. How to remove program in order to install 6.5?
There is no 6.5 version released. The current version is 6.3 and the beta is 6.7. I have tried to find the version you've mentioned but the developer does not give any link to it. In this case, I suggest you use an advanced uninstalling utility which will bypass the installer problems. I can recommend Your Uninstaller or Revo Uninstaller because both of these applications have the advanced uninstalling capability.
