I thought I would modernize our code by utilizing ResUtl.lib instead of our ancient copy of utils.c for parsing resource properties but it looks like that was a mistake.  In testing the change I find that calls to ResUtilGetSzProperty always return ERROR_INVALID_PARAMETER.  After verifying that all the parameters look right I stepped into the disassembly and found that the function does nothing but return ERROR_INVALID_PARAMETER -- there is no actual code in the function.

Are these functions supposed to be used?  They are in the docs...