With the recent 2.8.2 update, there's little I would say a problem with GIMP. I do run it in Windows though.
I would say there's little right with it, especially on Windows. Note that I am using 2.8.2. I spent hours discovering these and finding workarounds. Instead of messing with Hubble Telescope data and blending images I spent at least 2.5 hours on this crud! Note that I'm no computer newbie. I work as a computer programmer, have an IT degree, and play with all kinds of software in what free time I have.
I'm guessing the only reason others don't have issues is that they never open RAW files or do anything more than play with curves/levels, saturation and built in sharpening filters. Firefox and GIMP are 2 open source projects that were so good when I think of what the developers have done to them I almost want to cry.
Here's what I found in a handful of hours of use.
- GEGL library for transformations etc are a joke! They are slow and give less control than the old version of the function they replace. Rotate tool is a prime example. You use to be able to set an arbitrary angle of rotation. Now it will only rotate in certain increments, rounding to the nearest one it will actually do if you move off the dialog. Then it takes a REALLY long time compared to GIMP 2.6 to actually perform the rotation.
- The installer doesn't let you pick 32 or 64 bit. It forces 64 bit if you're on a 64 bit system (which I'm told breaks some plugins - like PSPI - the plugin that lets you run some Photoshop plugins within GIMP) . I HATE it when choice is removed from the user.
- UFRAW requires a workaround to install. This is in part due to the UFRAW Author's hate of Windows and refusal to support Windows. However the GIMP installer forcing the 64 bit version without giving the user a choice contributes. The workaround: You have to install in the same directory as GIMP on a 64 bit system. Okay fair enough. Except that if you actually install GIMP then install UFRAW it breaks the ability to open TIFF files giving an error. What happens is that if you try to open a TIFF you get application errors from tiff-file-load.exe.
The workaround: If you use portableapps installer to install GIMP as a portable application then install UFRAW over the top this does not happen. Both RAW and TIF seem to work properly.
There is a workaround in the link below for the installed version involving replacing libtiff-3.dll but I didn't get it to work for me the one time I try. I don't have any more time to spend hand installing DLLs to find out what went wrongm and by that point I wanted to throw something at the computer.
- GIMP GAP - the animation addon for GIMP is reported to not be fully working. Who knows if or when it will be updated.
- I've experienced no crashes. Others have experienced a lot of them. Haven't looked into this.
If you want to avoid a lot of this nonsense there is a package - GIMP Photocomix - that is MUCH larger than GIMP that is built on top of it. I haven't tested it much so I can't vouch for stability and I'm sure it inherits some of GIMP 2.8's issues (like rotation example above). It appears to include a mass of plugins including GIMP GAP and a few of the better GIMP plugins. But it seems to be developed by one guy and who knows how well it will be supported. There is a 2.8.2 based release candidate available. It reminds me a little bit of the now defunct GIMPShop in that it seems to do good things but may not gain much traction. I don't know the authors of these pieces of software, nor am I associated in any way. I've downloaded GIMP Photocomix but am reluctant to become dependent on it. Therefore I am now using two slightly customised portable versions of GIMP with a few plugins that I know well and use like G'MIC added - one of 2.6 and one of 2.8.2.
I find myself gravitating to launching 2.6 because I don't like migraines. I spent 2 hours on installing 2.8.2 for what should have been a 10 minute job blending images very roughly. In contrast GIMP 2.6 was hassle free to use - install what you need and it worked and worked well. I ended up using 2.6.
Here are some references
http://gimpchat.com/viewtopic.php?f=8&t=4266
http://www.gimpusers.com/forums/gimp-user/14804-gimp-2-8-2-windows-64-bit
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Sammy.
My forum postings reflect my own opinions and not those of my employer. I'm not employed in the photo business.