Question: Command not recognized


I have been looking for a solution to my problem since last night, but I have been unsuccessful. My problem is that the Column command is not recognized in some Maple worsheets. This problem might occur with other commands too, but most commands seem to work fine. It also only seems to happen in some (not all) worksheets. I just tried creating a new Maple sheet where all I do is create a 2x2 matrix and apply the Column command, but the command is not recognized.

Any ideas? Thanks.


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