I fixed this issue in the last commit a couple days ago. Pull again and give it a spin.
The problem still exists with the latest version. Here is the log, where the crash seems to have another cause than before. I also got a popup saying "Cannot find block with hash".
-ERROR - 1439730764: (BlockWriteBatcher.cpp:711) error grabbing block 0|0 in file #0, offset: 8, with a size of 285 bytes
-ERROR - 1439730764: (BlockWriteBatcher.cpp:715) error: std::bad_alloc
-ERROR - 1439730764: (BlockWriteBatcher.cpp:403) No block in DB at height 0
[Thread 0xaad70b40 (LWP 24086) exited]
[New Thread 0x93e6eb40 (LWP 24087)]
-ERROR - 1439730764: (BlockWriteBatcher.cpp:711) error grabbing block 1|0 in file #0, offset: 301, with a size of 215 bytes
-ERROR - 1439730764: (BlockWriteBatcher.cpp:715) error: std::bad_alloc
-ERROR - 1439730764: (BlockWriteBatcher.cpp:403) No block in DB at height 1
[Thread 0x93e6eb40 (LWP 24087) exited]
[Thread 0x94ff0b40 (LWP 24084) exited]
[New Thread 0x94ff0b40 (LWP 24088)]
-ERROR - 1439730764: (BlockWriteBatcher.cpp:2175) hit interruption marker from pull threads
[New Thread 0x934ffb40 (LWP 24089)]
[Thread 0x934ffb40 (LWP 24089) exited]
[Thread 0x94ff0b40 (LWP 24088) exited]
[Thread 0x959ffb40 (LWP 24085) exited]
-WARN - 1439730764: (BlockWriteBatcher.cpp:602) --- feedSleep: 0 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:605) --- workers: 0 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:608) --- writeStxo: 0.000131 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:610) --- writeStxo_grabMutex: 0 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:613) --- waitingOnSerThread: 0.004589 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:615) --- waitForDataToWrite: 0.872389 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:619) --- checkForCollisions: 0 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:621) --- getExistingKeys: 0.023769 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:623) --- getNewKeys: 0 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:625) --- getSSHHeadersLock: 1.7e-05 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:627) --- computeDBKeys: 0 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:629) --- getSshHeaders: 5.6e-05 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:631) --- finalizeSerialization: 0.004755 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:636) --- serializeBatch: 0.007962 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:638) --- serializeSubSsh: 3.6e-05 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:640) --- waitOnSSHser: 0.004153 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:644) --- waitOnWriteThread: 1.9e-05 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:647) --- putSSH: 0.000573 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:649) --- putSTX: 0.000375 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:652) --- getnextfeed: 0.814203 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:654) --- inControlThread: 1.09172 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:658) --- cleanup: 0 s
-WARN - 1439730764: (BlockWriteBatcher.cpp:660) --- finishCleanup: 0 s
-INFO - 1439730764: (BDM_supportClasses.cpp:259) Done with side scan of wallet
[Thread 0x947efb40 (LWP 24081) exited]
[Thread 0xacabfb40 (LWP 24083) exited]
-ERROR - 1439730764: (BDM_mainthread.cpp:430) BDM thread failed: Cannot find block with hash
[Thread 0xabe84b40 (LWP 20427) exited]
[New Thread 0xacabfb40 (LWP 24090)]
[Thread 0xacabfb40 (LWP 24090) exited]
[New Thread 0xacabfb40 (LWP 24091)]
[Thread 0xacabfb40 (LWP 24091) exited]
[New Thread 0xacabfb40 (LWP 24092)]
[Thread 0xacabfb40 (LWP 24092) exited]
[New Thread 0xacabfb40 (LWP 24093)]
[Thread 0xacabfb40 (LWP 24093) exited]
[New Thread 0xacabfb40 (LWP 24094)]
[Thread 0xacabfb40 (LWP 24094) exited]
[New Thread 0xacabfb40 (LWP 24095)]
[Thread 0xacabfb40 (LWP 24095) exited]
[New Thread 0xacabfb40 (LWP 24096)]
[Thread 0xacabfb40 (LWP 24096) exited]
[New Thread 0xacabfb40 (LWP 24097)]
[Thread 0xacabfb40 (LWP 24097) exited]
[New Thread 0xacabfb40 (LWP 24098)]
[Thread 0xacabfb40 (LWP 24098) exited]
[New Thread 0xacabfb40 (LWP 24099)]
[Thread 0xacabfb40 (LWP 24099) exited]
[Thread 0xb7c0a940 (LWP 20123) exited]
[Inferior 1 (process 20123) exited normally]
(gdb) backtrace
No stack.
(gdb)