If you are trying to install the Community Builder component (com_comprofiler.zip package) and get the following error message:
"Unable to find install package"
Then most likely your php 'upload_max_filesize' or 'post_max_size' parameter is set to 2M.
Check with your web hosting provider for instructions on how to increase your php 'upload_max_filesize' and 'post_max_size' parameters to at least 4M.
At this point we suggest that you go back and study the CB Primer Book.
Relevant Material