I have just updated DNG to version 4.2 but still can't convert the RAW files from the 40D. Always end up with "There was an error parsing the file". I am using DNG converter in stand alone on Windows XP platform. Can someone please help.
The most common problem is improperly installing ACR, for which the correct version can be seen under the 'Help=>plugins' menu. The best way to install new versions of any Adobe PS module is via 'Help=>update'. If this is of no help, then you should indicate your OS, the ACR version indicated (and how many CR plugins you see).