Common errors and problems

1. I get errors during setup that tell me index creation failed on some database tables: "CREATE INDEX mimrecidx ON mgw_instmsg (recipient) Access denied for user: 'myusername@localhost' to database 'mydatabase'". Setup fails due to this. What can I do?
2. I get something like "The script tried to execute a method or access a property of an incomplete object". What should i do?
3. I get something like "Warning: Smarty error: problem writing '/home/mlogemann/public_html/moregroupware/templates_c/contact_list.tpl.php.' in /usr/local/lib/php/Smarty.class.php on line 1081". What should i do?
1.

I get errors during setup that tell me index creation failed on some database tables: "CREATE INDEX mimrecidx ON mgw_instmsg (recipient) Access denied for user: 'myusername@localhost' to database 'mydatabase'". Setup fails due to this. What can I do?

The best way would be to ask your system administrator why you dont have CREATE INDEX rights on your database. Alternatively you can delete the CREATE INDEX lines from the end of modules/general/setup/install.sql, and run setup again. Then it will speed up things if you create the indexes manually (either though phpMyAdmin or directly with "ALTER TABLE <tablename> ADD INDEX ( <fieldname> )").

2.

I get something like "The script tried to execute a method or access a property of an incomplete object". What should i do?

Make sure that session_auto_start is disabled in php.ini!

3.

I get something like "Warning: Smarty error: problem writing '/home/mlogemann/public_html/moregroupware/templates_c/contact_list.tpl.php.' in /usr/local/lib/php/Smarty.class.php on line 1081". What should i do?

You have a problem with the rights on the folder "templates_c" or "templates_wml_c". Just give the right "write others" to this folder (on file system level) and the problem should be solved. You should of course check your security rules whether this is the best way to do it.