Question: Error in solve function in Maple 18.02

Dear friends,

Recently I was surprised when discovered the following error in using the function solve. If I run the simlest example from the help system for the first time (or after restarting), the following error occurs:

If I run this example repeatedly, this brings the following:


Previously in earlier versions I used solve many times for very complex computations and have never seen something similar.

Any suggestions are welcomed.

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