Error 500

[Rencam]

Good afternoon.
Sorry, I do not speak English, so I translate from French to Google!
I want to install Phocagallery_v3.2.3 Joomla! 2.5.8.
Loading phase occurs normally display visual selection buttons "Install" and "update".
Installation request: display the login page to the administration (?), Id + password + connection = .... the banner "Commands" disappeared! Disconnection ..., re-connection is good, the page returned to normal, but why????
It is time to use Phoca: first create a category, the page is displayed, but two "warning" there are identical:
"Warning: mysqli_num_rows () Expects parameter 1 to be mysqli_result, boolean Given in 'mysite /" / database / database / mysqli.php on line 263
page images: same point
Other pages return a 500 error.
Obvious conclusion tables "Phoca" were not created in the database.
These defects are constant despite several attempts.
Question:
   - Do I see other users affected by these defects?
   - Are they due to incompatibility with this version of Phoca Joomla 2.5.8?
   - How to fix?
Thank you for help me
RC

[Jan]

Hi, your Phoca Gallery version is Ok for Joomla! 2.5.8 but seems like you have some problems on server. Is your server ready to run Joomla! (as default, in Joomla! there is no login while installation extensions, the same with not creating tables for installed extensions, see: https://www.phoca.cz/documents/16-joomla ... ent-errors) But before creating the tables manually, I will recommend check if your server is ready for Joomla! installation.

Jan

[Rencam]

Thank you Jan.
Problem solved! Originally: lock unexpectedly database prohibiting the write access .... !
RC

[Jan]

Ok