plustek program was unable to load your scanner software

Clicking this button will bring up the Environment Variables dialog. At the bottom of this dialog is an Environment Variables button. This will bring up the System Properties dialog (it should already be on the Advanced tab).

Control Panel > System > and then choose Advanced System Settings in the left hand column.

C: Windows twain_32 CNQ4803 Now, follow these instructions to get to the dialog to modify the PATH environment variable. This is the path that is needed to be added into the PATH environment variable.

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Look in C: Windows twain_32 and there should one other folder in there. First, determine the correct path to add into the PATH environment variable. As it turned out this was the problem, so here is how to add that path back into your environment variables. One of the recommended solutions was to make sure a certain folder path is in your PATH environment variable. I use the Canon software CanoScan Toolbox to operate the scanner and when trying to scan I was getting the following error message: - CanoScan Toolbox - Unable to open TWAIN source Please check connection Then re-start Toolbox - OK - Searching the Internet for this problem turned up several people having the same problem and several solutions which looked like they may or may not work. I have a Canon CanoScan 4400F Scanner and the other day I was unable to get it to work. PART 3: UNINSTALL AND REINSTALL THE MFL-PRO SOFTWARE SUITE This issue may be caused by a conflict with third party anti-virus or firewall programs. Click the dropdown list to select your model if it is not already selected.

Plustek program was unable to load your scanner software