[TYPO3] th_mailformplus problem

[Bartosz Aninowski]

Hi
I've add filed "picture" to required filed list and my form doesn't work 
correctly.
I cant upload any file because everytime ext shows error that filed is 
empty.
If I remove filed from required list everything including saving  to db 
works perfect so there is no problem with filed name

This is my ts config.

plugin.tx_thmailformplus_pi1.default.email_requiredfields = 
name,surname,email,picture
plugin.tx_thmailformplus_pi1.saveDB{
dbTable = tx_people_list
fileUpload = uploads/tx_people/
fileTypes = jpg,gif,png
fileSize = 500000
dbinsert = pid:5,dateandtime:0
dbkey =uid
mapping = name:name,surname:surname,email:email,picture:picture
debug = 1
}