I am trying to run a simple thermal analysis, but the analysis fails every time. I can run other analyses and they work fine and I can access result files. After my thermal analysis fails, it gives me the error "Results files not available..." even though I can see the .CWR file in the directory that my assembly is in. I have changed the default directory for result files under simulation options to my current directory and the current directory under the current study options. I have tried pack and go including keeping the result files to another directory.
Check that the part or assembly file does not have any odd characters in the filename. Not sure what the thermal analysis naming convention is but I have had this issue in other software.