I just learned today why I have the same issue when replacing one caption style with another. The bitmap files are supposed to follow a naming convention.
If the files are named correctly, swapping them out will work fine. However, just today I discovered why I was having the same problem.
In fact, ALL of the Pastel caption styles have been named incorrectly.
So, I just discovered an error that has been shipped with every version of Captivate since 2007, and Adobe has never bothered to fix it.
If this isn't hard evidence that Adobe does not care enough about this product to properly support it (read: update it), I don't know what is. They are totally able to collect money for selling this dumpster fire of a program. And that should be a crime. I've been on this forum scouring the posts for issues that still exist and this is one of the oldest ones. I have messaged people in this community that have told me about how they've begged and pleaded with Adobe to fix things that are horrible UI or poorly implemented commands and features; they are met with stony silence. It's appalling, and it's unbelieveable.
Really? You posted in a thread from 2007 without taking into account all the features which have changed since that version (3?).
Captions are a legacy object which you should not use in present versions of Captivate. Since 8 years Shapes have been introduced with CP6 and they have a lot more flexibility than those old outdated captions. Why did Adobe keep them? Because many CP developers continue to use their 'old' workflows which they learned many years ago and never adapt new workflows. At this moment (version 11.5) in the Quick Start Projects and sample projects Captions are only used as text styles, never with those old boxes.
I wil close this thread, it is a bit hilarious to see complaints about a version of 13-14 years ago.
BTW: Image buttons are also such an unpractical legacy object which shouldn't be used anymore but has been kept for those innovation-afraid older users.