excel error object reference not set to an instance of an object when start

[Etienne_1]

Good day

I am experiencing issues with Microsoft Excel 2013 32- bit running on Windows 7 Ultimate 64-bit.
Whenever I start Excel or switch to it from another program the following error message pops up:

"An unexpected error occured:
Object reference not set to an instance of an object"

To the best of my knowledge, this started after a failed export of a Sage Pastel's Intelligence Center report.

Please advise on how to address this.

Many thanks

Etienne

[rproffitt]

Did you try disabling all add ins?
https://www.google.com/#q=manage+excel+add+ins

[Etienne_1]

It was indeed an add in causing the issue.
Many thanks