Registrar conflicting class times when it is not conflicting!!

<p>Hey guys, I'm signing up my classes for my incoming sophomore year. I have chemistry lab on wait-list (1 of 10) right now, but I have the error labeled:</p>

<p>Valid as of 14 Jun 2013, 1215a: Class Meeting Time Conflicts With One Of Your Other Classes.</p>

<p>I only have one other class on Thursday, and it is definitely not conflicting ( 10- 11:30am). What is wrong with it? Any ideas? I need to call into registrar on Monday because I have to work the whole day tomorrow. Thank you!</p>

<p>Is there a TA session on one of your classes that conflicts with this lab?</p>

<p>I do not think so. I thought TA session would be considered as one extra class (if a course has them). For example, Bio as 3 lectures, and a TA session.</p>

<p>Nevermind. I called and they said the conflicting message was just a rollover.</p>