Runtime Error 49, Bad DLL calling convention

Question

Q. Excel keeps throwing the following error, whenever my addin is loaded (Runtime Error 49, Bad DLL calling convention)

Answer 1

This error is probably occurring because of a compiler-bug. The easiest solution to this, would be to make a small code-change and recompile. What I usually do is,

1 -> Add a Private Enum type to the top of any module in the addin

Private Enum Something
    member = 1
End Enum

2 -> Compile the addin

3 -> Restart excel

4 -> Remove the code change made. It is no longer necessary.