excuse me im going to ask again haha! :]

[caspa]

what does this error means?

[Neblim]

http://rathena.org/board/topic/57843-how-to-fix-this/

Use the search function.

[caspa]

Sir, excuse i have a question in recompiling the server is it very necessary to clean the solution first before rebuilding it?

[Arcenciel]

Yes, it is.