Problems launching from Photohop CS5

Hello!
I've been using FF for quite a while, but it suddenly stopped working when trying to launch it from Photoshop CS5. It still works in standalone mode.

Would really appreciate it if anyone with similar experiences might know what's up

I'm getting this error message:

<class XFW::ArgumentError> The handle 0012B1B0 is not a valid window handle.


And this is the log:

Operating system: x64 Edition (6.1 build 7601) Service Pack 1
Physical memory: 12279 MB
Number of processors: 12, available: 12
Processor info: Intel® Core™ i7 CPU 970 @ 3.20GHz, ~3179 MHz

Filter Forge x86 4.013.34537.39570 Release, December 19, 2014 13:21 [05.05.2015 08:46:20 W. Europe Daylight Time]
Exception caught at thread 00000964 'Application':
<class XFW::ArgumentError> The handle 0012B1B0 is not a valid window handle.

<unknown file>(0) : <unknown function>()+0 at 005C0E7A in C:\Program Files (x86)\Filter Forge 4\Bin\Filter Forge x86.exe
<unknown file>(0) : <unknown function>()+0 at 008DB9C7 in C:\Program Files (x86)\Filter Forge 4\Bin\Filter Forge x86.exe
<unknown file>(0) : <unknown function>()+0 at 008DB9C7 in C:\Program Files (x86)\Filter Forge 4\Bin\Filter Forge x86.exe
<unknown file>(0) : <unknown function>()+0 at 005C0331 in C:\Program Files (x86)\Filter Forge 4\Bin\Filter Forge x86.exe
<unknown file>(0) : <unknown function>()+0 at 008DA002 in C:\Program Files (x86)\Filter Forge 4\Bin\Filter Forge x86.exe
<unknown file>(0) : <unknown function>()+0 at 008DA046 in C:\Program Files (x86)\Filter Forge 4\Bin\Filter Forge x86.exe
<unknown file>(0) : <unknown function>()+0 at 005C0D2E in C:\Program Files (x86)\Filter Forge 4\Bin\Filter Forge x86.exe
<unknown file>(0) : <unknown function>()+0 at 008D7B2A in C:\Program Files (x86)\Filter Forge 4\Bin\Filter Forge x86.exe
<unknown file>(0) : <unknown function>()+0 at 008DB9C7 in C:\Program Files (x86)\Filter Forge 4\Bin\Filter Forge x86.exe
<unknown file>(0) : <unknown function>()+0 at 008DD51B in C:\Program Files (x86)\Filter Forge 4\Bin\Filter Forge x86.exe
CONTEXT_CONTROL: CS:EIP 0023:7683C42D, SS:ESP 002B:01D3D724, EBP 01D3D774, FLAGS 00200216
CONTEXT_INTEGER: EAX 01D3D724, EBX 00000000, ECX 00000003, EDX 00000000, ESI 00B78594, EDI 01D3D7B4
CONTEXT_SEGMENTS: DS 002B, ES 002B, FS 0053, GS 002B

Thanks for reply!
I also got a seperate email from Filter Forge support, which I tried first and worked like a charm:

1. Go to the Filter Forge folder in the Plugins folder of your PS CS5.
2. Find the Filter Forge.config file.
3. Open the file.
4. In the IndependentUI line, if the value is false, change it manually to true.
5. Save the changes in the file and try running the Filter Forge plugin again -- this might help.