Liquify causes error: AIF internal exception

I had this issue too. I am running two GPUs on a Win 7 PC and the screen
PS was open in was using the 2^nd GPU. Switching the cabling so both
screens use the primary card and it resolved the issue for me...

Here's a REAL solution if you are using multiple monitors:
MAKE SURE YOU SET YOUR CORRECT MONITOR TO "MAKE THIS MY MAIN DISPLAY"

If you do this, as well as check the "use graphics processor" under the "performance" tab in Photoshop, it should work.

(did for me at least)

I am getting the error message "A Liquify error occured : AIF internal exception".

I am using a Dell XPS 15 9575 laptop with a 15 inch 3840x2160 display.  The laptop includes a  Radeon RX Vega M Graphics GPU, in addition to the Intel HD Graphics 630. 

There is an external 27 inch 2560x1440 display that connects via HDMI or DisplayPort. 

A Plugable UD-6950H docking station is connected to the laptop via a Thunderbolt port.  The Plugable docking station supports two DisplayPort connections or two HDMI connections, plus 5 USB ports, a Ethernet port, and others.  The external display can be either plugged into the Plugable docking station or into a separate USB-C to HDMI adapter cable connected directly to the laptop through a second Thunderbolt port.

In the Windows 10 display control panel, the two displays are set to operate at 250% and 100% scaling, the recommended values.

The error message only occurs when the laptop is operating with the display control panel Multiple Displays setting set to "Extend these displays", and the external monitor connected through the Plugable docking station. If the external monitor is connected directly to the laptop through the second Thunderbolt port, the problem does not occur. If the display control panel Multiple Displays setting is set to "Show only on 1" or "Show only on 2", there is no problem, regardless of how the external monitor is connected. 

I looked at all the other forum messages and experimented the various different graphics settings in Windows and Photoshop accordingly, without success.

On the surface, this seems like a situation where getting rid of the Plugable docking station is the logical solution.  Obviously, there is a lot of complex activity going on in the DisplayLink software and the docking station, in order to allow the video and other data to be routed together through a Thunderbolt port and split up among several different ports at the docking station. Plugable makes no secret that there are incompatibilities with games, and that this docking station does not support daisy-chaining DisplayPort monitors, so it's not completely surprising.  However, in general, it still seems to be a great docking station, much better than the official Dell offering, for example. If I have no better alternative, I will regretfully replace it with a simpler multi-port USB-only adapter, and  a Thunderbolt to DisplayPort adapter cable.

It is a bit puzzling to me why only the Liquify function of Photoshop is throwing errors, while all other software on the computer seems to get along with the Plugable docking station just fine.  Conceptually, it seems to me that using the GPU to crunch the image manipulation calculations in Liquify should be more or less independent of the task of rendering the resulting image on a monitor.  Why should there be a software error only when a docking station is inserted in the path between the laptop and the monitor?  If anyone has an explanation and/or a solution, I'd love to hear about it.

Same problem!!! This needs to be fixed asap... On a deadline and now I'm trying to find a fix for this " A Liquify error occured : AIF internal exceotion "

Same problem. Please give us a solution Adobe.

This has NOT been solved, Adobe.

Come on, now, people... what is going on?

Dont know if this helps.

I had "Use graphics Processor" turned on - or else "Oil paint" would not work. When I removed the tick Liiquify worked. Seems stupid - but it worked

Same problem here with Photoshop CC 20.0.1 on Windows 10.

Yesterday Liquify worked.  Today I get the "AIF internal exception" error message.

And of course I'm on a deadline!

Guys I've achieved my solution after ripping the web. for windows 10 users, Try going to graphic settings from the display settings menu, you'll have the option to browse an app, add the Photoshop.exe from the installation folder , then click on the added selection and press -> options. Now choose -> High Performance, and Save, restart Photoshop. This was the solution for my case because i using multiple screens from multiple GPU's and PS got confused with the source of the GPU power, very odd bug but i glad its behind me. Hope it'll work for you guys.

I'm so pissed off. Still not working after the update, now I had enough of this. Every goddamn thread about this issue is flagged as "solved" because some dumb reply like "UPDATE *drivers, software, anything else*. WOW, THANKS.
ONE single user DOESN'T mean that you have a solution, for christ sake.

I'm sick of not having a goddamn customer service, tons of bugs and stuff like this, paying each month for 5 years since now. Primarily because I'm the idiot who recommend to tens of my students to use Photoshop instead of other programs, giving them even more money. I'm thinking about changing software atm. I'm still paying for something that I can't use properly, and the Adobe Staff doesn't give a goddamn ****.

Not having a customer care for a professional software, when professionals use that software to work, is unacceptable, I repeat.