false color in preview of all catalogued pictures

hi @all,

i'am new in forum , new in experience lightroom 6 (updated 6.1.1).

my camera nikon d810. dell notebook windows 8.1, 8gb ram, graphic hd5200 (?).

i have imported photos catalogue , in small-picture preview of catalogue can see picture change in wrong color 1 after one.

in first moments pictures seems , after while of pictures changed wrong colors.

when click on 1 of picture whole picture in false-coloured.

on other side original nikon-software can't view photos correct. of pictures viewed mixed pictures (a part of picture next picture).

i'am frustrated problems.

yesterday have updated 6.1.1 , have updated actual nikon nef-codec 1.27.0.

thanx , greetings @all,

wolfgang

how images looks in import window?

do have apply auto tone adjustments box checked under lightroom preferences > preset tab?

could please share screen shot of image differences?

regards

sarika

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