What causes the error messages regarding MIL DLL, or MappHookFunction(), or MappInquire()?
The errors are actually caused by the MIL library from Matrox. MappInquire and MappHookFunction are two functions from that library. Please refer to Matrox regarding those errors. As a test we suggest disabling the MIL (or uninstalling it) and trying again. It is likely that the MIL has the camera locked before the Acquisition Device can get a hold of it.