TestGenerator: Write file error

Hi guys and gals,
when i test my ea on a ceratin time (strategytester) it works perfect. But if i increase the timezone to be tested (e.g. instead of 2004-2005 to 2004-2006) it somehow doesn't work anymore and i get this error ("TestGenerator: Write file error") (btw: i did all backtests on the "every tick" option). I use the alpari 1 minute history. I also converted this 1 minute history to 5,10,15,60,240min(4h) + day (1440)min.
I hope you know a solution for this problem, so that i can do backtests for longer timezones.
Thank you!
Greetings
-mike

Figured it out by translating a russian text, which was discussing the problem.
For anyone who'll encounter this problem:
Make sure to have enough space (can be up to several gigabyte). If this is not solving your problem, check whether your system runs on NTFS or FAT32. If Fat32 convert into NTFS.
Greets