what IDE and version of VAX are you using? is this C++, C# or some other language?
if you show VAView do you get any information on the class Image when you hover the mouse pointer over the class name? i am wondering if VAX knows anything at all about this class in your code.
does the information that appears in the yellow popup look correct? it seems that VAX knows about the class Image. this is most odd.
off hand i can only think of two things: a) there is a name class, and VAX is finding two different classes called Image, and isn't sure which one to be using.
b) there is something about the C++ code you have that has totally confused VAX.
have you tried telling VAX to re-parse the current file? if the button is not on the VAX toolbar then you should be able to add it. this might help.
to be honest i am rather grasping at straws at the moment. if the reparse does not help could you try rebuilding the symbol databases: VAX options -> performance -> general -> rebuild