Issues sending triggers using Builder

Hi everyone,

I have used the builder (v.3.7) to build an MEG experiment on Linux. I have researched and read over all the different discussion boards, tried the various commands in the terminal (e.g., probmod -r lp), but I still cant get the triggers to send properly and consistently ( it worked by magic just once!). It always says the same thing : “No such device or address PPCLAIM”.

Strangely enough, if I manually add a few rough lines to run it in the Coder-view - it works.
E,g,:
p.setData(1)
time.sleep(0.001)
p.setData(0)

Unfortunately, given the complexity of my experiment- it would be best if I could simply insert them using the builder view (so that I can link the timings to the stimulus).
Any leads would be appreciated it!!