I cannot provide accurate steps until I know what causes it. I will mess around with it and see if I can force it to mess up the ini file.

Code:
check.ini
[check]
9a2a03e4f50a44407ce69f54aab2cd9f=«-♥ßάßε♥-»™
cda6f820e61530f1120bc2110afc2845=☆SantasNurseKim☆
ffaa593b638f70053ceed146fbe7c76e=scarysharee86
6be4eb713cbecc8db63e9a2e92dd7dc1=HammeringHank1967
823af81ebfcea86443cc2c3397e4c4f4=·§tèvié·³²·
1287e140a6f3db31ca57f391a915c022=Patrickk
2f6ede983f428ff9228f7a12aec186df=ŞâŋţâşĻîļßûţţęŗĈŭρ
32806098d98db624e1a35ad1f9d0ab39=MzzMolly
eff4a7c4d8a483e605052ad461e4d913=drydoc007
214c9190e029476dc646bc0764c28aa1=jennifer_phila
c67de690f24fdca199ea590ae8e80c05=Cathy03301
5a2abde8196f74354e8a23ba9551d0cc=Foghorn_Leghorn
2dbf21633f03afcf882eaf10e4b5caca=paranoidandroid
a384a1efbc01be21ea6b0db84bdf5d1f=Over_Knight
370bfb31abd222b582245b977ea5f25a=Déćént~Gúy
7a1730f3cf577b0ad2250df5d64dc9fd=Talonwis
b58e1c900181090e2f0626b7bbde0c91=GloriaP
fcbee6ab5decc1a098af13544f2934c3=TênÐêrFøRÇê
1ef135181362fa0b1161630e65505ad2=~nails~WJS~
be3c6d64d7b62c4fc87fb9ea526dac82=mrmichaels
61293232482f80d6cebd7c96d4cf0371=Toredor84
cb3a1f7e970abd661e560f13793f9987=JT_the_head_elf
2e8852765c69a3aac8a79c8a50a40258=Mickdarat1
905669063311d8a17bd6958cd353eedd=santaspankedjulieanna
f1f615a7a67a325c8804b57e00393358=KatieJae1952
66e8ba8216a1e152d72653d99a4f03ab=Cokeaddict
fbf99289e8c1a22ee95ae6d2fb8ec4ea=Have2Flirt2
4c9c72e414bf0171008ab5c47c4d1b14=purplebunnyfoofoo
15898a944e35c6a3090e3790aa35a5ae=Worknman9
0a77e421202fbcc7b5d13c90de1fc793=ItStaysHere-LV
870da18123cc1e58746fefa6b580991e=RowdyRob
de8a84fd461ad43384634643a55c6d9c=MsCjay


Then access the file.

//echo -a $ini(check.ini,check,0)



Then remove entries manually fromt he file. Then check again. If you get an echo error, manually move all the text in the ini file down a space, making the first line blank and check again.