The problem is caused by the Ultimate PNG Fix Mambot which is awesome, but they use innerHTML in their javascript that messes with the overlib() in CB registration and anywhere else that you use a PNG with an Overlib. Solution:
1. Use GIF or JPG with your overlibs.
2. Correct this in CB by editting the administrator/components/com_comprofiler/comprofiler.class.php
3. With the CB 1.1 at around line 1688 you will find:
[code:1]function cbFieldTip($ui, $fieldTip, $tipTitle='', $width='', $image='tooltip.png', $htmltext='', $href='', $style='', $olparams='',$click=false) {
[/code:1]
4. Change the $image='tooltip.png' tp $image='tooltip.gif'
5. Save & upload.
6. Don't forget you will need to create a NEW tooltip.gif and upload to the components/com_profiler/plugin/template/YOUR_TEMPLATE folder.
Hope this helps.