Assuming your using vista,
From my understanding of error 8003, is that there is a file or folder that cannot be deleted or rewritten edited or created back over. Eg A file restriction.
Try starting your pc in safe mode, by tapping the F8 key whilst system is starting, Not when windows is booting up but before it gets to that stage.
Anyway, when you are up and running in safe mode, goto add remove programs and uninstall firma from there.
Restart back in normal.
Note: you may have to move your existing firma folders in your fpsc segments and entities folder to another place before doing a clean install of firma, as firma wants to create these folders again and if they already exist then that maybe causing a proplem.
Also have a look where firma was installed before to see if all has bee deleted when you uninstalled it, if anything there then manualy delete it.
Ok find your firma install program, and right click on it and select Run as Administrator and continue the install process.
make sure the settings in the install are going to the correct place of fpsc folder see my image attached
if all installs and work, then just copy the moved folders back, thats if you have made existing stuff, if not then just delete the firma segment and firma entity folders that are in fps creator.
I hope this can help you m8
Also NickyDude did the testing for firma, and maybe he could shed some light about it, if you can contact him, if you still got problems.
as i can't think of anything else

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