If you want to move your Tarma Installer project file (the .tip file) to a different location, then use the File > Save Project As... command rather than manually moving the file with Windows Explorer or a similar method.
The reason is that the Tarma Installer project file stores references to other files (such as the installation files, bitmaps, etc.) in a format that is relative to the location of the .tip file itself.
Tip: If you want to change the way that Tarma Workshop stores file paths in a project file, then you can do so by choosing File > Properties from the main menu and clicking on the Preferences tab. The options on this tab allow you to fine-tune the stored file paths. However, we recommend that you exercise caution with these options, because absolute file paths might cause more problems than they solve.