EcoStructure Machine Expert V2.2

[SDemmer]

Good Day,

After installing a device via DTM when saving the project an error message is displayed 

"Object reference not set to an instance of an object".

After the above error message is received then the project is unable to be save. "Cannot save project data in Read Only mode"

Controller TM251MESE

Error occurs after adding an ATS480 starter into the project.

What is the cause of this error and how to resolve.

Thank you.

[dnordenberg1]

Does it work if you can remove the device again?

I guess you never saved the project then so does the project work fine every time you open it until you add this DTM?

Checked if the ATS480 DTM you have is the latest?

[SDemmer]

Good Day,

The project works fine until the DTM is added. Then the error is displayed, following that, save does not function as the file is then in "read only" mode.

Project must be closed, unsaved data lost then reopened.

I will check the on the DTM version.

[ravi_kaneria]

yes we have similar type of issue we will connect and discuss please contact me on ravi.kaneria@hpautomation.in
also cc mark dhaval.dobariya@hpautomation.in

[dnordenberg1]

Btw, with 2.2 I hope you mean 2.2.2? 2.2 had lots of changes and it took a while to be stable. I skipped this version entirely because of it and went for 2.3.

I'm also a bit curious, what happens if you start a fresh project and add a ATS480?

Have you tried refreshing the DTM database (even when it thinks there is no need for it)

And as I wrote earlier, make sure the DTM is of latest version.

[SDemmer]

Below is step by step using V2.3

Create project in V2.3
ATS 480 DTM - V1.2.1.0
Add Device - Ethernet/IP ATS 480
Project Saves Ok
Project closes & Opens OK
Open ATS 480 Device
Edit Configuration - Offline Mode, Device is open with Data Set
Project Saves
Project Close - Error message appears Object reference not set to an instance of an object"
Project can't be closed. Has to be closed from Task Manager
When project is re-opened then last saved changes are there.
When adding another device, Tesys-T, the same error is manifest again.
If the ATS 480 is deleted then project saves and closes OK.

[SDemmer]

thank you for the suggestion.

It would be better to post solutions/comments on this thread then others can also view the solutions.