Violence erupted backstage at the Chris Brown concert in Dallas over the weekend. MediaTakeOut.com EXCLUSIVELY learned that Bow Wow and Chris Brown had an argument - and during the argument Bow Wow .

The problems started when Bow Wow had technical problems with the microphone during his performance. A tour insider tells MediaTakeOut.com, "When he finished his set he went crazy ... He blamed [Chris Brown's] people for trying to sabotage his performance."

And when Chris came in to try and calm the situation, things went from bad to worse. The insider explained MediaTakeOut.com, "Chris was apologizing and trying to explain what went wrong, but Bow Wow kept yelling."

Finally someone pulled Bow Wow away - but before he was ushered away, the pint-sized rapper spit in Chris Brown's face. The witness told MediaTakeOut.com, "I don't think he meant to spit on Chris, but that's what he did ... Everyone just went quiet, because no one could believe what this little [EXPLETIVE] did. I personally thought that it was going to be on and poppin', but Chris just walked away and got ready to go on stage."

The insider continued, "I have to give [Chris Brown] a lot of respect, he knew that the concert and the fans were most important and so he didn't do anything to mess things up. Props to that dude."

The incident reportedly occurred Saturday night in Dallas. Both Bow Wow and Chris Brown performed in New Orleans and the two are both expected to continue touring.

Developing....