most likely
Quote from their wiki
QUOTE
chmod the files
Because pluck has to save all it's information in files (no database is needed), you have to give pluck permission to edit files, and make new ones. This process is called chmodding.
The installer tells you to chmod some files and directories 777. This can often be done from within your FTP-program. You can check if all files and dirs are writable by clicking on Refresh, at the bottom of the page. If you don't know how to chmod, take a look at this page.
If you're sure every file and directory noticed is writable, click on Proceed.
puts the info into the php files