I have to work on an existing application, comprises of many projects including a database project.
In the statup project, which is a windows app., when making a call to a
The stack trace points to an assembly it could not load. If you're using .dll files to build or load anything (data import/export), you may want to start there.
Check to make sure the assembly is the proper version for your application, or that it even exists within the directory.
Also, double check the naming convention in the assembly. The stack trace shows an assembly name or codebase being invalid. Is the language parseable within your application? Is there a typo in the name?
These may be really elementary places to start, so my apologies if you've tried these. I've run into traces like this before, and it my case it usually amounted to a missing .dll or version incompatibility.