If you are need to reinstall FastCAM onto your computer, you have three options
1) Use the Backup utility to maintain your FastCAM Control Files
1. Run the Backup Utility, and backup your control files
http://www.fastcam.com/download/Utilities/FastCAM_Backup_Utility_Setup.exe
2. Uninstall & Reinstall FastCAM
3. Run the Backup utility and Restore the Control Files
Check this guide for a more information: http://response.fastcam.com/knowledge-base/article...
2) Manually Backup & Restore your FastCAM Control Files
1. Backup your Current FastCAM Folder
Usually located at C:\Program Files (x86)\FastCAM\
2. Uninstall & Reinstall FastCAM
3. Go to your Backup folder, and copy all of the files there, excluding
Executable Files
Language Files
Any sub-folders
4. Paste & Overwrite these files to your installed FastCAM Folder
Usually located at C:\Program Files (x86)\FastCAM\
3) Reinstall and select new Control files
1. Uninstall your FastCAM
2. Run the install again
Select your appropriate control files