From version 3.2.1 it is not possible to upgrade JoomDoc on debian linux,
(mysql-server-5.0=5.0.51a-24+lenny5)
because of error :
Warning: include_once(__DIR__/helper.php) [function.include-once]: failed to open stream: No such file or directory in /var/www/intranet/tmp/install_4e72e2d15a62e/upgrade/reinstall.php on line 14

Warning: include_once() [function.include]: Failed opening '__DIR__/helper.php' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/intranet/tmp/install_4e72e2d15a62e/upgrade/reinstall.php on line 14

Fatal error: Class 'ArtioReinstall' not found in /var/www/intranet/tmp/install_4e72e2d15a62e/upgrade/reinstall.php on line 20
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After uninstall old version 3.2.x and install new version 3.2.1 and 3.2.2., there is 2 errors on JoomDoc Document page:

Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in /var/www/intranet/libraries/joomla/database/database/mysqli.php on line 305

Warning: Invalid argument supplied for foreach() in /var/www/intranet/administrator/components/com_joomdoc/libraries/joomdoc/filesystem/folder.php on line 286

and no uploaded files are vissible on this document page.

Is there any solution, please ?

Thanks, peter

Error "failed to open stream" could means problem with permissions.

I checked directory permissions - all are writable with the same user. Mayby the reason is caused by upgrade joomla 1.6 to -> version 1.7. ( On clean instalation joomla 1.7 it is OK )

Peter

Thanks for post. Yes, problem with upgrade is also possible.