When release dlls don't work but debug dlls do

Question

After deploying our huge distributed system to one of our clients we experience an unexpected error. During the investigation we replace the assembly causing the error with

Answer 1

Have you tried including the debug files? (the pdbs)

If you co go your project settings and then the compile 'tab' select your release build in the dropdown near the top, then choose advanced compile options near the bottom, make sure to set it to create FULL debug information, then redeploy, you should now get more detailed information about the reason for the crash.