I have installed 6 mt instances in my desktop and i use them with NON MetaQoutes history data imported, for back test purposes.
The same installation i use in my laptop, for the same reasons.
After the last update 880 of MT4 i started to have the 131 error in my laptop instances only.
I tried everything, from rechecking my code to reinstall the history data, without any success.
Then i uninstall the data and i imported data from MetaQoutes and everything worked fine.
Does anybody knows a solution to this ?
Does anyone facing this problem also?
Thanks in advance