Bulk Item Upload Error

I'm not typing all this again. It appears this either didn't post or the admins removed it.

Upon upload using the template, I get "Error: The selected type is invalid. Sheet name: :sheet. Line number: 20."

This is different from yesterday where it was telling me that 14 characters is the max for price despite nothing being more than 5 characters. I haven't changed the sheet in the interim.

Hello,

There may be a problem with the excel file you are trying to import,

Or if you are making bulk changes using the bulk action feature, some of the products you add may have a problem.

We need more information to determine this.