Thread: What permission issues in 64-bit Windows 7 might be causing this “124” return value?

Originally Posted by jsrig88

What else should I look at?

The docs for the functions and structures you're using?

Originally Posted by msdn

pFrom
Type: PCZZTSTR

Note This string must be double-null terminated.

Although this member is declared as a single null-terminated string, it is actually a buffer that can hold multiple null-delimited file names. Each file name is terminated by a single NULL character. The last file name is terminated with a double NULL character ("\0\0") to indicate the end of the buffer.

pTo
Type: PCZZTSTR

Note This string must be double-null terminated.

Probably that obscure little requirement

They are double-null-terminated.