I asked this once before and didn't get any response. So I will try again.
We are finally migrating the rest of our old XP machines to Windows 7. We are on iMIS 10.6. We are running in XP Compatibility mode and disabled Windows Composition, etc, and are installing on 32 bit. Everything works like a charm except custom reports. We are using the same drive mapping and configuration we used successfully in XP. When the user selects a custom report, they get an error that the report is not found. The drive is mapped, we can navigate to the drive, etc., but iMIS doesn't see it. If we fake an import or export via the utilities menu and manually navigate to the share via the dialog box, and then cancel the export, for example, the report runs successfully, and reports run successfully for the rest of the day, or until the machine is rebooted.