Excel was able to open the file by repairing or removing the unreadable content...

[alecwarner]

When I open the workbook I keep getting the message:

Removed Part: /xl/drawings/vmlDrawing16.vml part. (Drawing shape)

Is there a way of identifying what "vmlDrawing16.vml" actually is?

Log file gives me this, but it means nothing to me - any guidance would be appreciated:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<recoveryLog xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main"><logFileName>error022640_01.xml</logFileName><summary>Errors were detected in file 'C:\Users\alec.warner\AppData\Local\Microsoft\Windows\INetCache\Content.Outlook\DUPO1KXH\SAR 24-7118 Heronstone Engineering Ltd TA Harlech Tools.xlsm'</summary><removedParts><removedPart>Removed Part: /xl/drawings/vmlDrawing16.vml part. (Drawing shape)</removedPart></removedParts></recoveryLog>

 

[jkpieterse]

You could theoretically find out which that drawing is by renaming the excel file to .zip and opening the zip file. It is a container with loads of small xml files which are interlinked using ID numbers. That means it isn't very easy to find out which is vmlDrawing16. But if it is important to you, you might as well start digging