"FILE NOT FOUND" after launching DSK3W in Windows XP Pro SP3

The OS of my computer is Windows XP Pro SP3.

I installed: (a) DLPORTIO.DLL. (b) INPOUT32.DLL.

I installed the DSK3 v2.05 tools (found in SPRC147.ZIP from TI).

I installed the DSK3 v2.05 tools (found in SPRC147.ZIP from TI).

I added the following lines in AUTOEXEC.BAT found at C:\
set C_DIR=.;C:\tic3x4x\include;C:\tic3x4x\lib;
set A_DIR=.;C:\tic3x4x\include;C:\tic3x4x\lib;
PATH=%PATH%;C:\TIC3X4X\BIN;C:\DSK3\DSK3;

I tested few simple programs (i.e. assemble/debug/load/run) and all worked fine. However, each time I lauched the DSK3DW.EXE, I saw a DOS command prompt (see Fig. 1) with the following message:

Directory of C:\DSK3\DSK3
File not found

... before Fig. 2 appeared. Kindly advise if there is something wrong with my installation.

Fig. 1: http://img.photobucket.com/albums/v608/zhaopian/DSK3DW_2.jpg

Fig. 2: http://img.photobucket.com/albums/v608/zhaopian/DSK3DW_1.jpg

Thank you very much

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