Crash in ShaderProgram.cpp

[elexis]

The following crash occured on r17298 on a water map:

ShaderProgram.cpp(891): Assertion failed: "(m_StreamFlags & ~m_ValidStreams) == 0"
Assertion failed: "(m_StreamFlags & ~m_ValidStreams) == 0"
Location: ShaderProgram.cpp:891 (AssertPointersBound)

Call stack:

(0x9988bb) ./pyrogenesis() [0x9988bb]
(0x940b81) ./pyrogenesis() [0x940b81]
(0x9423ea) ./pyrogenesis() [0x9423ea]
(0x730307) ./pyrogenesis() [0x730307]
(0x7ee174) ./pyrogenesis() [0x7ee174]
(0x7d41a2) ./pyrogenesis() [0x7d41a2]
(0x7d7d8b) ./pyrogenesis() [0x7d7d8b]
(0x7d911c) ./pyrogenesis() [0x7d911c]
(0x6aa8e9) ./pyrogenesis() [0x6aa8e9]
(0x433cf2) ./pyrogenesis() [0x433cf2]
(0x421bc7) ./pyrogenesis() [0x421bc7]
(0x7fe9ae12ba40) /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0) [0x7fe9ae12ba40]
(0x431b59) ./pyrogenesis() [0x431b59]

errno = 0 (No error reported here)
OS error = ?

Not sure if I can recover the crashdump...