HDR Efex Problem

[HectorHughMunro]

My HDR Efex plugin for Lightrom 4 (Windows 8 with Core i7 Geforce GT440) stopped working a couple of days ago. There's a fix on the website that involves disabling the GPU which worked. Does this mean that my video card is malfunctioning? Has this happened to anyone else?

 

[russellsnr]

There is a lot of talk on the Google/NIK plugins on there Flickr you may find an answer there but first if you have not already done so update your driver for the video card. That has worked as you can read on the Flickr site for other NIK apps.
Russ

 

[HectorHughMunro]

Thanks Russ, updating the driver was the first thing I did. I'll have a look on Flickr.

 

[AchimT]

On my system, the Nik plugins wouldn't open a window from within Lightroom, and two of them produced really strange colours in the images (a purple tint). Turning off GPU acceleration fixed both issues.

I have an AMD/Ati, even a fairly new and powerful one (but I forget which, bought it last year and it was above £300.- I think) and the latest drivers. Since you disable the GPU acceleration only for the Nik plugins, and they're still fast enough, I have never bothered to try to re-enable it.