Commented by: André Ziegler (andre.ziegler)

Please capture a ETW trace of the issue.

Install the WPT (http://social.technet.microsoft.com/wiki/contents/articles/4847.install-the-windows-performance-toolkit-wpt.aspx), copy the XML content from the stackoverflow topic (http://stackoverflow.com/a/30289933) into a file called DotNetRuntime.wprp, open the cmd.exe as admin, run the WPR command and point to the WPRP file.

"C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit\wpr.exe" -start D:\DotNetRuntime.wprp

Now try to generate the db from the model, after you get the error, run the wpr stop command.

"C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit\wpr.exe" -stop D:\Result.etl

Now compress the Result.etl + result.ngenpdb folder (important for .net stacks that include ngened files) into a zip/RAR/7z file, upload the compressed file on OneDrive and post a link here. I'll take a look, maybe I can see the complete exception data in the trace. It also includes .net load and ngen fusion data. Maybe this helps.