I have Canon 4400F and Canon Pixma MP780 scanners installed as devices on my new HP Windows 8 (64 bit) computer. After installing Reader X I was able to scan with both devices without problems. After a Reader X update and a Windows 8 update attempting to scan from within Acrobat yields error messages. (" ... rmslantc.dll is missing .... " when trying to use the MP780 and " .... scanintf.dll is missing ..." when trying to use the 4400F. Both files exist in c:\Windows\twain_32\MP780 directory. Reinstalling Acrobat X without the update didn't help. I tried to do a system restore for a date when scanning worked but received an error message that the restore couldn't be completed. All drivers that are needed to run these devices are current. Any ideas?
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