Thanks a lot for replying, actually I really appreciate.
But to be honest I still don't get it, which files are you talking about that I need to replace?
MOTE: I'm doing fresh installation,
Step 1: I installed ioncube on my server, and process was done successfully
Step 2: I downloaded here amazcarcart script version 5.1.2, and I uploaded source code to my server.
Step 3: I started installation process by hitting
www.mydomain.com/install and installation wizard opened.
Step 4: When I reach the third step of installation, and I put random number as a purchase code then the alert mentioned above appear, and prevents me from finalizing installation process.
So please tell me,
1. What might I did wrong?
2. You said I need to replace files, so which files do I need to replace, and I need to replace them with which other files?
3. You said, "max_input_time max_execution_time>1200 to load database etc." so you mean I need to increase the execution time on my server to greater than 1200?
Lastly, once again thank you very much for replying, I really appreciate your feedback on this. Much thanks in advance.