Can someone explain more thoroughly how SSI and Caching works in MT?
Here's the issue I'm having. I have a "middle column" that I want to include - unaltered - on a number of pages. It's pretty complex and pulls from a lot of places, so I use caching and SSI. Here's the problem - from time to time, the data in this column just disappears the only way to get it to come back is to remove the caching code (I use in-template caching and ssi directives) and rebuild.
Here's an example:
Main Index: This tag is also included in Main Archive, Pages, and Entry List.
The module "middle" contains another module called, "Dobson" ( a cartoon we run) Dobson is a VERY simple module that only contains an MTEntries loop that pulls the last 1 entry for Dobson by Category ()
So...Normally, this works just fine. In fact, 99% of the time it works just fine. But on some occasions, Dobson (and most of the other modules included in middle, but not all of them) are just empty. It's like the MTEntries tag just stopped working or something.
So I have to go remove the caching and SSI code, rebuild the page, and then put the code back in.
Can someone tell me what the hell is causing this?
Reported on Movable Type 4.2

I saw this once or twice with module caching and ActionStreams. It's most likely just due to the fact that template module caching is a very new feature, as it was introduced in 4.2. You might want to submit a bug report if you haven't resolved this yet.