I had imported the CCS 3.3 working build into CCS 4.2.3 and was able to compile it as well.
But I am getting the following errors when I selected " DEBUG ACTIVE PROJECT"
C28xx: Flash Programmer: Unable to read algorithm file (C:\Program Files\Texas Instruments\ccsv4\DebugServer\bin\win32\..\..\..\C2000\flashAlgorithms\FlashAPIInterface2812V2_10.out). Operation cancelled.
C28xx: Flash Programmer: Error erasing Flash memory.
C28xx: Flash Programmer: Unable to read algorithm file (C:\Program Files\Texas Instruments\ccsv4\DebugServer\bin\win32\..\..\..\C2000\flashAlgorithms\FlashAPIInterface2812V2_10.out). Operation cancelled.
C28xx: Flash Programmer: Unable to read algorithm file (C:\Program Files\Texas Instruments\ccsv4\DebugServer\bin\win32\..\..\..\C2000\flashAlgorithms\FlashAPIInterface2812V2_10.out). Operation cancelled.
C28xx: Flash Programmer: Error encountered when writing to flash memory
C28xx: Trouble Writing Memory Block at 0x3f6000 on Page 0 of Length 0xa
Cannot write to target
I am using the 2812 DSP processor and XDS510 USB emulator.