The game seems to be hanging when I enter a non-vanilla star system. Askonia seems to be fine. I've tried duplicating this several times and I have noticed it is only certain jump points (Jump Point Alpha usually) and I can sometimes get in when entering from the Fringe jump point. I've installed a clean Starsector and redownloaded all the mods and am still getting the same problem. And yes, I've edited the vmparams.
Here's the last bit of the log before the game crashes; there's no error message, just a Starsector.exe has stopped working or Java(TM) Platform etc
Spoiler
160491 [Thread-6] DEBUG com.fs.graphics.TextureLoader - Loaded 257.92 MB of texture data so far
160491 [Thread-6] INFO com.fs.graphics.TextureLoader - Cleaned buffer for texture graphics/junk_pirates/ships/junk_pirates_onslaught_overdrive.png (using cast)
160492 [Thread-6] DEBUG com.fs.graphics.TextureLoader - Loading [graphics/BR/ships/newbrdycruiser.png] as texture with id [graphics/BR/ships/newbrdycruiser.png]
160551 [Thread-6] DEBUG com.fs.graphics.TextureLoader - Loaded 258.58 MB of texture data so far
160551 [Thread-6] INFO com.fs.graphics.TextureLoader - Cleaned buffer for texture graphics/BR/ships/newbrdycruiser.png (using cast)
160552 [Thread-6] DEBUG com.fs.graphics.TextureLoader - Loading [graphics/ships/atlas_af.png] as texture with id [graphics/ships/atlas_af.png]
160603 [Thread-6] DEBUG com.fs.graphics.TextureLoader - Loaded 259.25 MB of texture data so far
160603 [Thread-6] INFO com.fs.graphics.TextureLoader - Cleaned buffer for texture graphics/ships/atlas_af.png (using cast)
160626 [Thread-6] INFO org.lazywizard.lazylib.LazyLib - Running LazyLib v1.61 for Starsector 0.6a
160758 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id ms_neriadjets_SHIP_SYSTEM not found
160758 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id ms_booster_SHIP_SYSTEM not found
160758 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id burstjets_drone_SHIP_SYSTEM not found
160759 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id shrimpsensor_SHIP_SYSTEM not found
160759 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id nom_damselfly_drone_SHIP_SYSTEM not found
160759 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id ms_swflares_SHIP_SYSTEM not found
160759 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id ms_drivecharger_SHIP_SYSTEM not found
160759 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id ms_swacs_SHIP_SYSTEM not found
160759 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id flarelauncher_fighter_SHIP_SYSTEM not found
160759 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id traveldrive_SHIP_SYSTEM not found
160759 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id nom_gecko_drone_SHIP_SYSTEM not found
160760 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id ms_mimirskimmir_SHIP_SYSTEM not found
160760 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id inferniumdrive_SHIP_SYSTEM not found
160760 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id inferniuminjector_SHIP_SYSTEM not found
160760 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id ms_phaseanchor_SHIP_SYSTEM not found
160760 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id ms_phasemine_SHIP_SYSTEM not found
160765 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id ms_displacer_SHIP_SYSTEM not found
160765 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id skimmer_drone_SHIP_SYSTEM not found
160765 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id ms_siegemode_SHIP_SYSTEM not found
160765 [Thread-6] WARN com.fs.starfarer.loading.SpecStore - Description with id ms_jammer_SHIP_SYSTEM not found
160767 [Thread-6] DEBUG com.fs.graphics.TextureLoader - Loading [graphics/particlealpha32sq.png] as texture with id [fs.common/graphics/particlealpha32sq.png]
160790 [Thread-6] DEBUG com.fs.graphics.TextureLoader - Loaded 259.25 MB of texture data so far
160791 [Thread-6] INFO com.fs.graphics.TextureLoader - Cleaned buffer for texture graphics/particlealpha32sq.png (using cast)
161854 [Thread-6] DEBUG com.fs.graphics.TextureLoader - Loading [graphics/backgrounds/background4.jpg] as texture with id [graphics/backgrounds/background4.jpg]
168935 [Thread-6] INFO com.fs.starfarer.campaign.save.CampaignGameManager - Loading ..\\saves/save_ElenaHarrington_953801094368402383...
182265 [Thread-6] INFO com.fs.starfarer.campaign.save.CampaignGameManager - Finished loading
302691 [Thread-6] DEBUG com.fs.graphics.TextureLoader - Loading image graphics/BR/backgrounds/obsidianBG.jpg into existing tex id 318