Hi,
you may want to look into this KB from Microsoft:
https://learn.microsoft.com/en-us/troubleshoot/dynamics/gp/object-reference-not-set-to-instance-of-object-error-when-creating-report-in-management-reporter
The pop-up in MR isn't really of any use, you need to dig further into the Configuration Console of MR where you'll find the logs for MR, or use the windows event logs on the system application logs.
Here is another older blog post that might help if you can't fix it with the above link.
http://dynamicsconfessions.blogspot.com/2013/12/reference-not-set-to-instance-of-object.html
HTH,
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Beat Bucher
Business Analyst, Dynamics GP SME
Montreal QC/Canada
@GP_Beat
http://www.gp-geek.comMontreal QC GPUG Chapter Leader
MBS MVP (2015-2018)

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Original Message:
Sent: Feb 16, 2023 05:15 PM
From: LaVonne Ghanavati
Subject: MR Report Disappearing
I too receive this MR Error. I'm not using the Web Viewer and I am on the latest version available for Management Reporter

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LaVonne Ghanavati
Controller
Minden-Gardnerville Sanitation District
Minden NV
Original Message:
Sent: Nov 08, 2016 02:12 PM
From: Steve Erbach
Subject: MR Report Disappearing
Ronda,
You're using the Web Viewer, yes? That message is more of a web page error.
What version of MR are you using; that is, which CU version? How about your browser? IE? Chrome?
Regards,
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Steve Erbach - Business Analyst & MS Dynamics Platform Administrator
WOW Logistics - Appleton, WI
+-VP for Communication, GPUG WI (Milwaukee) Chapter
| Co-Chair, GPUG WI (Green Bay) Chapter
| GP 2013 R2 (12.00.1801)...upgrading w/Sikich SOON to GP 2016!
+-MR 2012 CU15
Blog: https://www.gpug.com/blogs/steve-erbach
Twitter: @serbach
Original Message:
Sent: 11-08-2016 12:23 PM
From: Ronda Smith
Subject: MR Report Disappearing
Hello, intermittently I have a generated report disappear on me while I am viewing it and toggling between applications. Does anyone know what causes this? It is a MR err msg, but for some reason it won't let me copy/paste on here so it states: "Object reference not set to an instance of an object"
Thanks!
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Ronda Smith
Arkansas Specialty Orthopaedics
Little Rock AR
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