This is an observed debugging problem under Win2000 Pro SP4 in AVRStudio 4.15 build 623 using WinAVR (GCC) 20090313 using JTAGICE mkII with an AT90CAN128 on a STK500/501.
The JTAGICE mkII reports:
Hardware Revision 0x00
Firmware Revision 052C 052C
When F11 debug stepping the first line of code in each C function (except for main) is never stepped into and using run to cursor on the first line gives the error "Please place the cursor on a valid source line". Switching to dissembler view shows the first line of code in each function is missing (at least all the ones I checked), yet the .lss file does have the complete correct code.
Has anyone else seen this?