I had to turn off the laptop because the CPUs were workig at 100%.
Now I'm writing from my desktop.
Last night I made a try with it. The machine is
Acer Aspire M1600 AB7D
Pentium D 925 (Dual Core) 3 GHz
4 GB RAM DDR2
AMD/ATI Radeon HD 6450 Silent 1GB DDR3 (Asus)
When I bought the macine (about 7 years ago) it came as a 32 bits one with a 32 bit system (Win Vista)
Though, the processor is a 64 bits.
So I installed in this machine the RC1.And it runs perfectly!
It appeared this issue with the Desktop Effects settings, but quickly resolved.
Till now no problems!
Now, what's the explanation?
In a two years old machine have problems, but in this older one not!
Aaa, and thanks for packing Kalós! BTW, neither this program runs in the laptop; on desktop is working perfectly.