preferences file isn't valid

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
preferences file isn't valid	1.99	0.2	366	68	28
preferences	0.9	0.3	2664	52	11
file	1.05	0.2	872	6	4
isn't	0.19	0.2	766	92	5
valid	1.34	0.1	5612	1	5

Keyword	CPC	PCC	Volume	Score
preferences file isn't valid	0.53	0.4	4711	7
your preferences file isn't valid	0.2	0.1	2177	58
could not validate this preference file	1.87	0.3	1550	71
not reference to a valid file	1.72	0.9	5210	77
file is not valid	0.29	0.6	4767	74
preferences cannot be stored	1.96	0.7	9625	72
no valid settings file	1.58	0.8	821	24
file format is not valid	0.21	0.6	1511	45
your preferences file is corrupted or invalid	1.77	0.8	1787	80
not a valid font file	1.86	1	4207	41
not valid settings file could be found	1.79	0.5	2789	50
file format or extension is not valid	0.76	0.3	1622	16
your preference file is corrupt or invalid	1.15	0.7	8534	98
error writing preference file	1.15	0.8	2316	7