When you said you couldn't find the dll file anywhere else, either, I thought that mean it wasn't in the 'shipping' folder.
I don't know if it would help, but did you try running the support tool as administrator?
The report.zip file should contain:
From the '..\Documents\Larian Studios\Dragon Commander' folder
- 'Savegames' folder
- config.lsx
- graphicSettings.lsx
dx.txt (dxdiag report)
fileinfo.xml (A file containing a list of files in the install folder, and the c:\users\username\Documants\Larian Studios\Dragon Commander folder, with their sizes, time stamps and hash values. It may have been left in a temp folder, or something, when the support tool crashed.)
results.xml (the results of the min requirements tests)
If there are any crash dump files in the install folder (forget the exact naming convention, they have crashdump and the full date and time in the name), it wouldn't hurt to include them, if you wish to manually zip the files the support tool was attempting to compile.
