I have an "Archive-Related Template"
and a "Monthly" archive type to deposit the code fragment in a month folder for inclusion in month entries.

Problem: rebuild crashes with an "Internal Server Error" on every second rebuild. It does this consistently. Replacing the template with blank code causes the same crash.

Any ideas?

... I also get
in the error log, which I note from another post in this category can be associated with misconfigured /n etc.

One thing about MTArchiveList is that it can be resource intensive, especially if you're including it in every archive page - because it has to keep looping through all those entries every time you rebuild, multiplied by the number of archive pages that you have.

Are you just trying to generate a list of all entries by month that you can show on a sidebar or something similar in each archive page?? Is there any reason you've set this up as Monthly Archive rather than perhaps as a single index page that can be included in your other pages?

Hello Girlie, (sounds like a horrible chatup line)

Yes, I've done that. But the server crashes even if the template is completely blank. It's very odd ...