I've been finding that when I use the change sequence function it is causing a fault that prevents the model from running. When I've done a change sequence to move a block of elements I get the message that "The program has encountered an unrecoverable error. The error number is: 179" when running (specifically when it is at the Compute Forces and Stresses stage). Alternatively depending on how I change the sequence I get the message that there is an error with the material database.

Is there a work around to this?

We need your job file and your sequence of commands - exactly what you are trying to do. Please open a Support Request (SR) in eCustomer and include this information. We have to have your data and exact details in order to reproduce the issue. If we can't reproduce the issue, we can't fix it.