Linker error on static linking to third party lib

[System_159]

Hi all!

Been a while since I've posted, but this little problem has got me stumped. I've got a .lib that is supplied to me by a third party, and I'm having trouble statically linking to it. I'm using MSVC-2008 with QT. The link error is:

fatal error C1047: The object or library file 'ThirdPartyLibrary.lib' was created with an older compiler than other objects; rebuild old objects and libraries
1>LINK : fatal error LNK1257: code generation failed

I don't have the source for this library, only the /lib and /include. Anybody know what it is I'm doing wrong, and what I can fix to link to this thing?

Thanks!

[CommonTater]

It sounds like the library format may have changed since that library was compiled, causing linker errors.
If you don't have the source, you're pretty much done.