NativeCAM Problems with Program Start after transfer to Control

Hello everyone,
I have installed the latest version of NativeCAM under the Gmoccapy user interface of LinuxCNC. So far it works, but every time after transferring a new program to the control, I always have to press the start button twice to launch the program.
The first time I press it, the milling spindle starts briefly, stops immediately, and then I receive several error messages:

• invalid parameters in linear command
• linear move on line 38 would exceed positive limit of axis/joint 2
• linear move on line 38 would exceed positive limit of axis/joint Z

After that, I can restart the program again and again without any problems, until I transfer a new program (or the same one again) to the control.
What could be the cause of this error?
Thank you very much in advance for your help.