Unhandled exception while calling C# dll in MQL4

 
I am trying to call a C# dll in mql4 but the get the Unhandled exception 0xE0434352.

The dll function I am calling is already  using a C# dll.

Please help me
Thanks in Advance!!
 

"0xE0434352 is the exception code for all .NET exceptions so that won't tell you much."

And for those Errors it's the wrong forum.

Reason: