Invalid ARFCN error

[silentkow]

I keep getting an Invalid ARFCN error when attempting to calibrate my hackrf to a particular channel

first line I enter is "kal -s 1900 -g 40 -l 40"
I get correct output along with gsm 1900 channels that are in the area

I then enter "kal -c 535" 535 just being an example
This is where the error comes up.
I have also tried to just put in the frequency with the "kal -f 1934" 1934 being an example again.

[silentkow]

I should also mention my hackrf is running the most recent firmware and I was able to install all the dependencies for kalibrate.