RedMon Installation Errors
I recently had an experience with a Canon LBP-3500 printer where we were sharing the printer on the network, and one of the laptops that needed to use it was using 64 bit Vista. Canon don’t provide 64 bit drivers for their CAPT range of printers it seems, so there was no driver for the 3500, nor any compatible driver. In fact, the driver setup program even refused to run.
The solution that I found was to use GhostScript and Redmon to create a normal Postscript printer for a printer that wasn’t actually there, share that printer, and rediect the rendered output to the real printer. Of course, it means that the remote computer won’t have the fancy utilities and options available in the real Canon driver, but at least it would enable printing.
The problem was, during the installation of RedMon, I messed it up and had to uninstall. The uninstall failed, and reinstallation kept failing with:
“Error Copying DLL. Error = 5. Access is denied”
The error is actually correct. Something goes wrong with the permissions when installing the RedMon files into C:\Windows\System32, and those files cannot be overwritten. The solution is to manually remove the RedMon files from that directory. I think the files are redmonnt.dll and unredmon.exe (after you fix the DLL error, it complains about another file). Alternatively, just do a search for “*redmon*” and delete the files located in the system32 directory. Installation should then succeed.