when you copied over the files did you change the config settings in
/manager/includes/config
to find your new database?
discuss.answer
It is really easy to miss a few of the config settings if you do it manually. Also you do not know if you have any other odd issues that seem to crop up at times.
What I do is this:
1. Install Modx as if it is a brand new install on the new server. That is create a new database and leave it blank. Upload a complete set of install files (NOT from the existing install but a 'fresh set' as downloaded from Modx) Run the install, but DO NOT delete the setup folder (well you can but then you will have to upload it again!)
2. Install all the extras you use.
3. Check to see if it basically works (Manager and site)
4. Drop all the tables in the database and create a new set of tables from a backup of the original site.
5. Run setup again as an upgrade.
The topic applies but my situation is different. My hosting company moved my site to a different server and now MODx Manager doesn't fully function for me. I can't access most of my resources. I can access templates and template variables, but not chunks. I can see Resource Groups under Security but that's all I can access (not user, not policies). I've run setup/upgrade and restored a previous database backup, but have same problems.