Bug with module

Hi,

I have a bug with the random poll module, the name's author is replace by "TXT_AUTHOR" and the Total number of votes doesn't appears.
Also, I can vote on a poll, but if I reload the page, another poll appears and it's impossible to click on the vote button.
Could you help me with this ?

Joomla version: 1.5.26
Community poll version: 2.1.2

Thanks
Fabrice