Set SX frequency failed


I made a program using the Lime Suite API that sweeps a range of TX frequencies and reads both RX channels. For some specific frequencies I am getting this error and the program ends before completing the frequency sweep. I tried to set these specific frequencies using the GUI and I am also getting the same error:

Set SX frequency failed
ERROR: SetFrequencySXT(50 MHz) - cannot deliver frequency

The error appears for some specific frequencies [MHz]: 50, 100, 344.39, 390, 399.72 and 799.445

Is it a configuration problem (related to the ini file I am using)?
Any suggestion to solve this issue?

Ini file link:

Thanks in advance