Steven,

Is the xliff a standalone file or part of a project?
---Both. Opening a standalone file immediately shows that error. Then, at the end of creating any new project, it appears after the batch tasks are done.

Options settings- have you also checked the Global settings option?
---Unclear. As I said and shown, I've changed the default File-->Options setting and all relevant project settings. If there's a 3rd place for settings then I don't know about it.

If you remove the project/file from Studio completely and re-create with a slightly different name- does the issue persist? 
---It's not any one particular file. It's all new files--standalones or new projects-- regardless of the naming. I did this "FW_ISIM" project two months ago and since then the TM setting refuses to leave. I just tried creating a new project as a single document. Same error AFTER I confirm the project settings. I have my 3 main TMs here (none have "FW_ISIM" in them:

Then I click okay. The error shows up. I ignore it always, then click Cancel. This same error shows up on a TM member's computer and I've done my best to help her remotely but I can't solve the problem either.

Should I ask technical support? I'm hoping the "answer" isn't just a reset which I've had to do too many times...

Steven,

Is the xliff a standalone file or part of a project?
---Both. Opening a standalone file immediately shows that error. Then, at the end of creating any new project, it appears after the batch tasks are done.

Options settings- have you also checked the Global settings option?
---Unclear. As I said and shown, I've changed the default File-->Options setting and all relevant project settings. If there's a 3rd place for settings then I don't know about it.

If you remove the project/file from Studio completely and re-create with a slightly different name- does the issue persist? 
---It's not any one particular file. It's all new files--standalones or new projects-- regardless of the naming. I did this "FW_ISIM" project two months ago and since then the TM setting refuses to leave. I just tried creating a new project as a single document. Same error AFTER I confirm the project settings. I have my 3 main TMs here (none have "FW_ISIM" in them:

Then I click okay. The error shows up. I ignore it always, then click Cancel. This same error shows up on a TM member's computer and I've done my best to help her remotely but I can't solve the problem either.

Should I ask technical support? I'm hoping the "answer" isn't just a reset which I've had to do too many times...

Keenan Cooper said:

Should I ask technical support?

Yes.  Better than guessing and if you have removed all references from your projects and default template then it makes sense to ask support.

One thing you ight like to try is rename the projects.xml and add the projects back in again one at a time starting with the problematic one.  If it doesn't work after the problem project is back just put the original projects.xml back and contact support.