Hi,
I think I found solution. I had same issue you experienced.
I physically remove directory Silverlining from the Plugin directory and start xplane.
Everything look like working without crash, tried couple of flights each 2 hours long and it was smooth.
Then when I don't use anymore Ixeg 737 I put again the directory Silverlining back to Plugin directory.
The bad thing is that you loose SkyMaxxPro but at least you can enjoy 737classic.
Hope is gonna work for you.
Cheers.
Xavier.