There is a Bug (or a feature ? i dont know) that when you play a while some items stop spawning like no barrels,and wood is that normal ?
BUT: I know a fix 4 this just go to Menu and reload it then everything should work fine !
V1.04 Windows 7 64 Bit
I had a similar issue where planks stopped floating in as salvage. Other salvage items seemed pretty sparse too. I still got planks from barrels. Restarting the game fixed the issue. I have about 5 minutes of video showing the problem if you'd like me to upload it so you can take a look.
I also just had a 'Program has stopped responding' crash.