The Deadline export function relies on the Deadline lightning plugin, which itself relies on your system PATH variable ("DEADLINE_PATH") to find the deadline repo and the necessary EXEs to process a submission. My guess is that something on your remote system is not setup properly, so that the chain of command is broken somewhere. Either way, these are not tyFlow-related issues...tyFlow merely calls up Deadline-provided functions but doesn't handle any of that configuration itself.
As for the script button issue, it's odd that it's remaining sticky...sounds like an issue with your submitter in that is not resetting its value, but since we only use a 3rd party submitter at work I can't tell if the sticky nature of it is something Thinkbox intended, or something your 3rd party submitter intended if you're using a 3rd party one. Either way, I see no harm in toggling that back to its original value after submission...I'll make a note to change that in the next build.
As for the script button issue, it's odd that it's remaining sticky...sounds like an issue with your submitter in that is not resetting its value, but since we only use a 3rd party submitter at work I can't tell if the sticky nature of it is something Thinkbox intended, or something your 3rd party submitter intended if you're using a 3rd party one. Either way, I see no harm in toggling that back to its original value after submission...I'll make a note to change that in the next build.