Vurious errror message in ATOM from apio


I created a new project from a new project folder and added some files from the blinky example and the top.v and morse.v from one discussion just to see if this works. Everything is doing as expected and the TinyFPGA-BX is loaded and the LED is flashing, but during all my commands in the GUI like CLEAR, BUILD, LOAD get a red region at to top right corner which tells me that something is wrong.
See included JPG.
Waht does this mean? For me there is no sense for displying this message.
What do I have to do to correct this?

Regards, harald.