cannot find entry symbol reset_handler

We've transferred to new laptops, and are of course reinstalling many things including CrossStudio. Install went alright for 1.7, and license, etc...

When I try to build an existing project that I know should work, the linker barks at me with:

"cannot find entry symbol reset_handler; defaulting to 000002fc"

As far as I see, reset_handler is still in Philips_LPC210X_Startup.s as expected. Project properties linker options still points to $(StudioDir)/targets/Philips_LPC210X/Philips_LPC2138_MemoryMap.xml. The xml file is indeed there as expected.

Nothing seems amiss. Any ideas why this is happening?