Hello - I am new to the forum so hello everyone. I am experiencing a problem in a spreadsheet that I have used daily over the last 2 years but suddenly I have a problem inserting a row or inserting copied cells.

I get the following messages:
Ex1.png

Then:
"Excel cannot complete this task with available resources. Choose less data or close other applications."

I have removed all unnecessary info from the file which is about 3500kb and the data area on the sheet in question is only using 250 rows and about 300 columns (saved as .xlsm)

Has anyone experienced a similar problem and is there a solution?

Thanks
Malcolm