Martin,
I am sorry to hear what you are going through. My biggest frustration with AC is you just can't install and go and not worry about things like this. I am beta testing (when I say that I mean trying out 6.6 on a sandbox. It is difficult for me to on one hand see all the advantages of 6.6 and the problems.
Here is a rundown of what to think about.
Hard drive space: HDD space has nothing to do with memory except for the page file. You may have 1GB of hard drive space and 32GB of RAM. Hard drive space usually doesn't affect performance. If AC were taking up 60GB of a 70GB partition, you should be fine. You can generally make the partition larger, but it is ALWAYS good to have AC on a separate drive. I, personally, run the system drive and system files on a completely separate hard drive than any data. Some databases do get irritated or just stop playing when there is not enough hard drive space. Exchange server is one such database. If my system drive gets down to around 4GB, it will stop working. That happened once, and it took me quite some time to figure it out. Fortunately, I had somehow backed up the entire computer to a folder on the C:\ drive, so I cleared out 30GB of space right there. So, I don't know what SQL has to say about not enough space.
RAM: Memory usually isn't an issue anymore as it is cheap and 64-bit OS allow you to put at least 32GB and generally more on the PC. You only need so much RAM. I would
test your RAM. While it can be run fairly quickly, the recommendation is to run it overnight. You can use the .iso version or the USB version. The latter, of course, is easier. The newest 5.0 or 5.1 version will work on 32-bit or 64-bit. I doubt this is the issue as it would affect all computers, but may as well try. It's free.
Wireless: I won't say much here as some offices have to have wireless, but it just isn't as reliable as wired. But, again, it shouldn't be causing the issue.
DB tuner: I do not see nor have I ever had to run a database tuner after everything has been installed and working. The database tuner is simply to sync your old data with the new database. When a new version comes out, new tables have been added and the old structure needs to change. And, I have no idea why it continues to say it is in the AC folder when it is not. Unless that has changed.
VMs: The paid version of VMWare is a bit pricey but worth it if it solved all these issues. I often wonder if it would be worth running the client AC in a VM environment so one could go COMPLETELY back to a certain point. Not system restore as that doesn't revert everything back, plus you would be restoring the entire computer. With a virtual machine, you would have one app running only, and going back to a snapshot would take seconds. Of course, you would have to pay for another OS, another small amount if it worked.
Errors: During a busy day and during frustration, a lot of people -- including me -- will forget the Event Viewer. Run --> eventvwr. I would check the system and the application under Windows. I typically filter it to critical. Either, it will give you an error that you can understand or Google it. I would post it to here so others along with Indy and Sandeep can unencrypt it.
Database: I am certainly not sure if this is a database issue. If so, you would want to have it looked at. Either by AC or my friend (PM me)
Program: The development of AC is a double-edged sword. First, it was designed for doctors by a doctor, whom I must say is brilliant. To teach yourself Visual Basic while you are working full time is a feat that should be in the Guiness Book of World Records. On the other hand, not being a developer of 15 years experience would likely lead to a code base that may be flawed, etc. Now, I have no idea if the code has been rewritten or not but each new version just has too many bugs.
Have you had a chance to reinstall AC on your server? Do you have a completely separate drive you can run it from? Or move the databases and II folder using AmazingUtilities?
Good luck.
