I found a problem, I think:
this is the content of install_module.txt that was in the zip file you had just recently posted:
include_once $modx->config['base_path']."assets/modules/advalbum/advalbum.module.class.php";
new advalbum_module($modx);
Here is the content of install_module.txt that you uploaded to the modx repository on the main site:
include_once $modx->config['base_path']."assets/plugins/advmedia/advmedia.module.class.php";
new advmedia_module($modx);
No wonder the module wasn’t working on my live install- it was making calls to /modules/advalbum...
Funny thing is, either version of the above text opened the module on my local xammp install. That’s bizarre, huh?
By using the zip package you had posted in this thread, and replacing the the module code to the second version shown above (from the file on the modx repository), I was able to use the file browser in the TV configuration on a document, but ONLY on my live installation (modx version .9.6.2). I still have the 404 error on my local xampp installation.
So, I must have a problem with my xammp configuration.... apache configuration, I assume.
Do you have a custom apache config that you use on your xammp installation?
thanks!