DC 9.62 with Win10 can't "find" external SHD .c file

"[email protected] [rabbit-semi]" <[email protected]> 17 Dec 2015 17:54:01 -0800

Newsgroups	gmane.comp.hardware.rabbit-semiconductor
Message-ID	<[email protected]>

I have an application that uses the SHD download library, and it compiles and runs fine under Win7. I just got a new PC running Win10 and it produces a compile error message stating that it can't find the file "http_upload.c". That file is entered in the lib.dir file, exactly as under Win7. Other than for this problem, the new installation under Win10 appears to be functional. Any ideas?