Default unable to add a widget to lockscreen - settings stop

d802, stock v20f, rooted, dorimanx kernel v6.8

as the title says, i'm unable to add any widget to lockscreen... it always gives me "settings stop" error and it doesn't even open the widgets list... (few times it almost gave me the list, but it fc-ed still)

don't know what happened, it was working yesteday...
adding a widget to homescreen (nova launcher) works fine

edit:
tried to fix permissions in recovery...
tried to clear cache for settings in titanium
still no change

thanks for any help in advance
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- LG G2 D802 - Cloudy G3 v1.3 // Dorimanx kernel 7.x
- LG Optimus 2x - AOSPA ParanoidAndroid 4.45 (kk 4.4.4) + Firtecy Kernel kernel #5
- Prestigio Multipad PMP7100D - Stock JB4.1.1