Hi, Yusra.
Do you still see errors when you include the worksheet in a blank worksheet? Does your new worksheet have the same ORIGIN as the one you want to include?
Are you sure that there are -- no -- errors, even minor ones, in the original worksheet? I've had cases where I left an evaluation with an error. Although the rest of the worksheet was fine, that one error flagged the whole sheet as having errors when I included it.
As for making the worksheet easier to read, do as I suggested above: cut & paste the whole contents into an Area, then collapse the Area. That means all of the workings will be hidden. You could even lock the Area to prevent others having access to the Area if you're, say, sending the worksheet to a third-party.
The once caveat with Areas, though, is that a Mathcad Prime Area can't include Areas, so you'd have to partition the worksheet into several (collapsed) Areas.
Stuart.