Another ERROR_PLATFORM_FAILURE problem, this time with correct permissions

Can anyone help with this problem? I'm using netfirms as a host, if that makes a difference. I'm having a similar problem.

The weird part is that all my permissions are correct. I used the fix permissions script at http://example.com/gallery2/lib/support/ and it said it completed successfully. Also, I emptied cache successfully. Valiant told me to switch from file locking to database locking, and I did that successfully. I also deleted the smarty directory. At this point, there doesn't look like there's anything wrong until I try to create some thumbnails or resized pictures at which point this error pops up:

Error (ERROR_PLATFORM_FAILURE) : /mnt/w0000/d13/s10/b02962c8/www/sidarous.net/g2/g2data/locks/2030
in modules/core/classes/FlockLockSystem.class at line 72 (gallerycoreapi::error)
in modules/core/classes/GalleryLockSystem.class at line 147 (flocklocksystem::_acquirelock)
in modules/core/classes/helpers/GalleryLockHelper_simple.class at line 176 (flocklocksystem::acquirewritelock)
in modules/core/classes/GalleryCoreApi.class at line 2193 (gallerylockhelper_simple::acquirewritelock)
in modules/core/ItemEditAlbum.inc at line 685 (gallerycoreapi::acquirewritelock)
in ??? at line 0 (itemeditalbum::runrecreatethumbnails)
in modules/core/classes/GalleryTemplateAdapter.class at line 915
in /mnt/w0000/d13/s10/b02962c8/www/sidarous.net/g2/g2data_572899nesw/smarty/templates_c/%%2773762923/%%9F^9F1^9F1C93D7%%theme.tpl.php at line 55 (gallerytemplateadapter::trailer)
in lib/smarty/Smarty.class.php at line 1258
in modules/core/classes/GallerySmarty.class at line 61 (smarty::fetch)
in modules/core/classes/GalleryTemplate.class at line 209 (gallerysmarty::fetch)
in main.php at line 473 (gallerytemplate::display)
in main.php at line 94
in main.php at line 83

Last Run Details:

Gallery version = 2.2.2 core 1.2.0.4
PHP version = 4.3.10 cgi
Webserver = Apache/1.3.34 (Unix) mod_fastcgi/2.4.2 mod_perl/1.26
Database = mysql 5.0.24a-log, lock.system=database
Toolkits = Exif, ImageMagick
Acceleration = none, none
Operating system = FreeBSD cgi1 4.10-RELEASE-p21 FreeBSD 4.10-RELEASE-p21 #0: Mo i386
Default theme = wordpressembedded
gettext = disabled
Locale = en_US
Browser = Opera/9.20 (Windows NT 5.1; U; en)
Rows in GalleryAccessMap table = 123
Rows in GalleryAccessSubscriberMap table = 4123
Rows in GalleryUser table = 7
Rows in GalleryItem table = 4122
Rows in GalleryAlbumItem table = 116
Rows in GalleryCacheMap table = 0

You're right; I emptied the cache again, and things seem to be working fine. Thanks!