Item library upload errors, no error in error file

[OldFarmhouse]

For the last several weeks I've been unable to properly upload to the item library.

I have a fairly large library, of which some, but not all, items have multiple units/components.  I've been able to download the library, make changes, and re-upload just fine in the past, but not for a while now.

Even downloading an excel file and immediately attempting to upload without touching the file fails.  I have the issue on multiple computers and multiple browsers.

The issue appears to be related to something on the Component Inventory tab.  If I delete the contents of the tab except for the headers I can upload successfully.  But if there is any info in the tab at all, the upload fails with one error.  The error file shows no errors. 

I've gone thru and corrected any weirdness I can find without results.  I'm at a loss at this point.

[Candlestore]

@OldFarmhouse ,

Since you are having problems with the Excel file, try making adjustments to the excel sheet of Items.  Then save that Sheet as Update.csv.  Then try to upload this.  The csv file will eliminate the component sheet and any other sheets from the upload.  You can not adjust the components and  units sheets from execel I believe anyway.  I could be wrong, but I have noticed some problems with uploading the Excel file, but not a csv file.  I thought it was just me.  

Hope this helps.