router os v3.0rc13

I have upgrade routeros 2.9.27 to 2.9.49 and add RB44G Right from upgradeing i found a lot of problems, the router seems to crash sometimes (everyday) and noone coulnt connect with pppoe or hotspot support team told me to upgrade it to 2.9.50 but still the same problem then support team told me to upgrade to v3.0rc13 but new problem:

THe router restart by itslef!!! still have problem please if anyone can tell me what’s happening to the mk please tell me by the way is should to you in 2.9.27 i had no problem at all and that’s why i purchose 2.9.49.

Thanks for your earaliest response.

save you configuration.
and reset the system to default.
then apply the configuration one after the other.
The might help you isolate the problem.
it is due to an old syntax.

You added a RB44G when you upgraded? That could be causing your problems. Try removing the RB44G and see if your problems go away.

-Gerard

you mean i remove the RB44g and then put 4 NIC?

what you mean?

export file=backup

or
in winbox in file menu use backup?