A fellow Captivate developer emailed me about a bothersome issue that was causing much stress. Here's the story… the whole story, and nothing but the story…
The developer (I'll call her Amanda), was working on a particular slide without issue–the background looked just fine, thank you. In fact, below is a portion of the slide background in question. It certainly looks okay.

However, when previewing or publishing the project, Amanda noticed that the slide background displayed a series of horizontal or dashed lines.

Try as she might, Amanda could not get rid of the lines (they did not appear on the slide, the slide's background, or the Timeline). It was a real gotcha! So what is a developer to do? Read on…
I've seen this kind of thing before in my own projects. I am not sure what caused them. I'm betting that the problem is likely caused by a corrupt screen capture being used by the slide background. I know, that sounds really bad. But no worries, you won't have to re-record anything to fix the problem.
- Insert a blank slide after the slide with the problem
- Right-click the slide with the problem and choose Copy Background
- Right-click the blank slide you inserted and choose Paste as Background
- Go back to the problem slide and copy all of the slide's objects from the bad slide and paste them onto the new slide
- Hide the bad slide
- Preview the new slide–the background issues should now be gone
- Delete the hidden slide and you should be good to go
Do you have a Captivate production problem that's making you pull your hair out? Email your problem and let others learn solutions from your experience.