Unable to Insert Template Information

What I’m trying to do

I am an experienced developer new to Obsidian, struggling with templates. I am using templater to insert profile front matter into a new note. The profile has loaded only once, after I disabled Cursor Location because of an apparent race condition. But, the second time I tried an insert it failed despite Cursor Location being disabled. I have gone through a LONG process of checking the templates, doing lint scans, analysing Console errors, disabling other plugins, etc. and the profile has never worked again. Please, is there an official or “generally recognized” problem resolution procedure for errors of this sort? I am now measuring time spent in DAYS not hours.

Things I have tried

I have looked but not found forum postings that squarely address race conditions preventing template insertion. I have followed the guidance of Google’s AI Mode service with very partial success, as explained above. After many hours, I have reached the end of that procedure without resolving the problem. Lately, action mainly consists of disabling plugins, cycling plugin status, radically simplifying templates. etc. I doubt there is anything I haven’t tried. It’s now more a question of HOW it’s tried and in combination with WHAT. I know it CAN work because I saw it work ONCE. I NEVER quit and I will go to ANY length but this is one of the most difficult troubleshooting experiences I have experienced in 60 years [sic] of software development experience. When the going gets tough what else can be tried?

Excuse my deleted post. I missed that you said you were using Templater, not Templates.

To troubleshoot, people would want to see your Templater settings, your template, and your template’s full file path—including the file name.

And say whether the steps you’re taking to apply the template are exactly these or something different:

  1. Create a note.
  2. Place the typing cursor in the note’s body.
  3. Open the command palette and select Templater: Open insert template modal.
  4. Select your template from the list and press Enter (or mouse click).

And finally, say what you see in the note so people know whether it’s entirely blank or had content but just not the content you are expecting.

And can you confirm that you tried in a sandbox vault with only Templater installed, to rule out other plugins?