Validation error

Just testing out the module. The upload worked the first time with image set #1, but the second time and several thereafter using image set #2 (on a new node each time) I got the Validation error, please try again warning.

It appears that the images are uploading, but early in the upload process, the progress bar with the text images in queue are processed starts rapidly flashing in and out of the page. This doesn't stop until I leave the page.

So then I tried with more images from image set #1, and they uploaded. I clicked next step and there for editing were ALL of the images from my failed attempts with image set #2 along with the latest from #1.

Perhaps there is something about image set #1 that is breaking the upload. However, they work in a normal imagefield upload.

I'm attaching a shot of the progress bar so you can see.

Let me know what other info I can provide. Browser is FF 3.08