A10m + BL TOuch + Repetier Host 2.1.6

[AR12]

Hello,
this is my first post in this board and i have to tell you that this is my first 3d Printer.
I have:
a10m with bl touch
win7 pc with Repetier Host 2.1.6 installed
i followed the user manual of the a10m and downloaded and installed the drivers and software and i made the correct settings (by the way, whats the corredt baud rate?)
If i oush the connect button the Bl touch sensor on the printer deploys and stows one time. thats the only response i get from the printer. on the PC a red window appears which says:
a fatal error on the printer side stopped the printer until the error is fixed. Printer message:
Echo:enqueueing "M999".
What does this mean and how can i fix it?
printer details:
Mrlin1.1.8
Boardinfo GT2560 V3.x

I hope somebody can help me,
Thanks in advance.
Best regards

[OldWizard]

Hi,

I have a A20, and am using Repetier Host, and am also new to £D printing. but after installing BL Touch, I got a similar message.
As you have probably realised, if you ignore the message, just press continue, and the printer works fine.
Regards,