An error message keeps appearing on one of my spreadsheets and then appears on all others that I load.

[CLB]

All other files are OK unless I have already loaded the problem file

[librebel]

Hello @CLB,

If possible, upload the culprit spreadsheet by clicking “edit” under your original question, an then click the Paperclip button to attach your file.

And while you’re there, please also add the full text of the Error message that appears.