Everytime I try to do something with op25 I always get this weird waterfall thing where the entire terminal window fills up and anytime I try to use any command except for Ctrl+C it won't work. Has anyone else had this problem?
Correct. If you don't redirect stderr the terminal display gets hosed in exactly the manner shown by the OP. There are two alternatives - either redirect the logging data to a file (recommended anyway) or utilize the http terminal with the -l command line option.