out of memory and a commit memory use of 30000000

hello,
I have since a few days a problem with my cinema 4D r13.
When I'm working the memory the program use wouldn't come free again.
My commited memory raise to values of 30.000.000 .
I think on a mamory leak but I don't know if this is possible .
Does anyone have the same problem ? Does anyone have a solution for my problem ?

I have 8Gb ram and when the problem occures I was just working on an interior of a house without any texturing.
No havy renders . Just the modeling itself. I have my graduation work in a mounth so I have a big problem if I don't get it running again.

When I'm running my diagsostics there are no faults or errors . I get only the message " Not enough memory" when I use cinema 4D ( after +- 2 hours )

I hope someone can help me .
Thanks in advanced !

the values are standard low setted
I didn't changed them

If the problem is only with this program, I'd certainly contact their support/forum directly as they're much more likely to have the answer to this than us.

I already asked them, no know issuses they say

Then, this would make one known issue. Do they not offer any troubleshooting steps to help figure it out?

they gave three options but all not good

it come totally back