BK-Thumb plugin is inherited from Martin Larsen's Multithumb for Joomla 1.5. 

Security Issues Fixed
for users that use PrettyPhoto popup with multithumb version prior 3.7.2 ( for J1.5)

High Priority - For users use PrettyPhoto popup - More information ยป

Please update to latest multithumb version (at least 3.7.2) ASAP.
For Joomla 1.5 please update to




Release 2.2:

- mootools issue is solved
- lightbox replaced to slimbox
- slimbox version is upgraded
- {nomultithumb} tag is visible in article body - fixed
- Upgrade installation supported

Fix 02 changes:

- multithumb cache moved to "standard" location under ROOT/cache
- Individual category enabling/disabling functionality fixed
- filtering by class fixed

Fix 01 changes:
- PHP4 compatibility issue fixed
- incorrect readmore text and link fixed
- "clear cache" function fixed
- resize of small images issue fixed
- "normal popup" problem fixed

Original plugin is here: http://www.kreacom.dk/mambots/multithumb-for-joomla-15.html

Note: Release 2.1