Hello, this Error happens by incomplete Entry/Code in your Client SRC.
Look in your SRC and make sure, that your
packet.h contains a Code like this :
Code:
Server(Packet.h) Client(Packet.h)
long long gold; long long gold;
I have found this Solution on a other Website, is not my Work

When this not solve you Problem, then check your .png/.tga Files, Resolution, pic Size and File Format.
sry for my bad English -_-