TypeLoadException....with no additional info....how to diagnose this?

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How might I go about diagnosing a solution that once deployed, the
program doesnt start but instead says "*******.exe -
TypeLoadException" with no other info given on the error screen. The
program deployed and started fine until just yesterday, then it
started doing that every other deployment....now it consistently gives
that error.

What might I do ti figure out whats going on?


Some info


the solution has one main project, supported by two class libray
projects in the same solution, one of which uses sqllite.net
The main project uses OpenNetCF and OpenNetCF.windows.forms, and the
two supporting class libraries, as well as a dll built by a seperate
solution (a security library)....various other references all around
of course, but mostly standard stuff.

Why might the error give no additional details?

.