O.K. 27.00.17 and 27.00.18 are now installing for me. Not sure what I did beyond rebooting for other reasons several times. But I am still having a problem at startup. As part of my 4start.cmd I have the line "prompt `%@lower[%_disk]`:$g" and I expect the prompt to wind up as "c:>", but instead I am getting "[C:4NT12]". If I enter 4start<cr>, the prompt becomes the proper "c:>". All the rest of the .cmd file seems to get executed properly (alias and path and some other setup sort of stuff) but that prompt is wrong and I don't know where the 4NT12 comes from. The directory for my current TakeCommand installation is 4NT13. Oh, I only use TCC, not TakeCommand. Directories 4NT10, 4NT11, 4NT12, and 4NT13 are all on the disk, but only 4NT13 is currently used. What is going on?