New Hosting - Permission problems?
Sorry this is so vague, but I'm just stumped right now.

I've been developing a site under a test server that I share with other people. Once I finished everything, I got hosting at NearlyFreeSpeech.net and switched the nameservers over. I had to change all the URLs over as I had a specific folder on the test server. I did this all by hand instead of Search and Replace, so I'm fairly certain everything is correct.

However, I've been having a series of problems and they all seem related. At first I was unable to access certain files because of a permissions problem. I was getting a kind of MySQL "permission denied" kind of error. I also refer to a lot of PHP files that check certain conditions (desired username free, is password correct, etc.) and for some reason, many of those are always returning the same exact "true" false even though the code is the same as I had it on the test server. After turning off those JS validations, I've just been trying to login/register and many of those return unwarranted errors in the server side validation, so something is definitely going wrong.

I ended up just setting every file to CHMOD 777 some time in between all this, and it got rid of a few errors. However, I'm still having those validation errors and when it occasionally logs me in, it doesn't start the session. 

Once again, really sorry this is so vague. It's just kind of hard to give specifics and I've been trying for too long to figure this out on my own. If you do, however, need me to provide any code to help me troubleshoot this, please let me know. I'd really appreciate some help.
New Hosting - Permission problems?
===

Sorry this is so vague, but I'm just stumped right now.

I've been developing a site under a test server that I share with other people. Once I finished everything, I got hosting at NearlyFreeSpeech.net and switched the nameservers over. I had to change all the URLs over as I had a specific folder on the test server. I did this all by hand instead of Search and Replace, so I'm fairly certain everything is correct.

However, I've been having a series of problems and they all seem related. At first I was unable to access certain files because of a permissions problem. I was getting a kind of MySQL "permission denied" kind of error. I also refer to a lot of PHP files that check certain conditions (desired username free, is password correct, etc.) and for some reason, many of those are always returning the same exact "true" false even though the code is the same as I had it on the test server. After turning off those JS validations, I've just been trying to login/register and many of those return unwarranted errors in the server side validation, so something is definitely going wrong.

I ended up just setting every file to CHMOD 777 some time in between all this, and it got rid of a few errors. However, I'm still having those validation errors and when it occasionally logs me in, it doesn't start the session. 

Once again, really sorry this is so vague. It's just kind of hard to give specifics and I've been trying for too long to figure this out on my own. If you do, however, need me to provide any code to help me troubleshoot this, please let me know. I'd really appreciate some help.