Error executing code, wrong variable assignment

Ever come across irritating dialog box that says

"Error executing code, wrong variable assignment"

on posting of free text invoice or Interest note posting when you have just installed fresh build and imported fresh data?


Most of the people really find problem in troubleshooting this, specially when they have not done any modification to the CustVoucher or CustVendVoucher class and it is on sys layer when the AX is on usr layer.

Solution
Most of the time classes that are in hire achy means classes that are inherited from some other class, come across this problem. The solution for this it "compile forward" the parent class from select class --> Right mouse click --> addins --> Compile forward. This can really solve the problem