# Attachement\_fu max\_size problem...mystery...need help please **URL:** \ **Category:** Rails\ **Created:** [September 21, 2007, 11:20am UTC](https://www.ruby-forum.com/t/attachement-fu-max-size-problem-mystery-need-help-please/115173 "2007-09-21T11:20:12Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![pacochin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/9fc29f/32.png) [@pacochin](https://www.ruby-forum.com/u/pacochin)\ **Post date:** [September 21, 2007, 11:20am UTC](https://www.ruby-forum.com/t/attachement-fu-max-size-problem-mystery-need-help-please/115173/1 "2007-09-21T11:20:12Z")
Hi All, Just to share with you, after many hours of hair scratching, 10 cubs of coffee and sleepless night, i finally got attachement\_fu creating thumbnail for me… BUT, there is a mysterious problem i encounter. What i learnt 1. I realize that i must create a parent\_id in the photos table according to the instruction, othewise, thumbnail wont get generated. What I dont understand 1. I dont know why i cant allow a bigger file size to be uploaded. Consider below photo.rb model file i got has\_attachment :content\_type =\> :image, :storage =\> :file\_system, :processor =\> ‘Rmagick’, :path\_prefix =\> ‘public/files’, :thumbnails =\> { :thumb =\> [50, 50]}, :max\_size =\> 3000.kilobytes validates\_as\_attachment Now, the max\_size =\> is 3000 kilobytes, meaning 3kb ? even i changed it to 30000.kilobytes, it does not allow me to upload file size smaller than that. I got this error… 1 error prohibited this photo from being saved There were problems with the following fields: ``` * Size is not included in the list ``` The error message is rather misleading, I GUESS its trying to say “File Size exists limit”…but i have no idea. Any suggestion will be good ?