Wow. Nothing like a new release to keep you on your toes!. My apologies for the bugs in 6.00.20 and 6.00.21. This should solve both issues and additionally provide a new popup window format for the calendar that should be more cross theme compatible.
Another note: Many of you have asked how to have the event details show/hide feature either default open or closed depending on the event. I have modified the code, so that it is closed by default. If you wish it to show open then on the event setup page, select Yes for show description on form and it will be default open.
Enjoy and thanks for the support.