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Crashing with Python library (custom HDA)

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Can any Python gurus help me resolve a Python crashing issue?

Have created a custom Python HDA which loads external data files.

I get the following error when I switch to Scene View, and within a minute Houdini always crashes




Warning! ***HDF5 library version mismatched error***
The HDF5 header files used to compile this application do not match
the version used by the HDF5 library to which this application is linked.
Data corruption or segmentation faults may occur if the application continues.
This can happen when an application was compiled by one version of HDF5 but
linked with a different version of static or shared HDF5 library.
You should recompile the application or check your shared library related
settings such as 'LD_LIBRARY_PATH'.
You can, at your own risk, disable this warning by setting the environment
variable 'HDF5_DISABLE_VERSION_CHECK' to a value of '1'.
Setting it to 2 or higher will suppress the warning messages totally.
Headers are 1.10.2, library is 1.8.11

General Information:
           HDF5 Version: 1.8.11
          Configured on: Sun Jul 24 12:04:33 EDT 2016
          Configured by: prisms@sikasso
         Configure mode: production
            Host system: x86_64-unknown-linux-gnu
          Uname information: Linux sikasso 2.6.32-573.3.1.el6.x86_64 #1 SMP Mon Aug 10 09:44:54 EDT 2015 x86_64 x86_64 x86_64 GNU/Linux
               Byte sex: little-endian
              Libraries: static, shared
         Installation point: /home/prisms/builder-new/WeeklyDevToolsHEAD/dev_tools/local

Compiling Options:
               Compilation Mode: production
                     C Compiler: /opt/rh/devtoolset-2/root/usr/bin/gcc ( gcc (GCC) 4.8.2 20140120 )
                         CFLAGS: -fPIC
                      H5_CFLAGS: -std=c99 -pedantic -Wall -Wextra -Wundef -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Wconversion -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls -Wnested-externs -Winline -Wfloat-equal -Wmissing-format-attribute -Wmissing-noreturn -Wpacked -Wdisabled-optimization -Wformat=2 -Wendif-labels -Wdeclaration-after-statement -Wold-style-definition -Winvalid-pch -Wvariadic-macros -Winit-self -Wmissing-include-dirs -Wswitch-default -Wswitch-enum -Wunused-macros -Wunsafe-loop-optimizations -Wc++-compat -Wstrict-overflow -Wlogical-op -Wlarger-than=2048 -Wvla -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat -Wstrict-overflow=5 -Wjump-misses-init -Wunsuffixed-float-constants -Wdouble-promotion -Wsuggest-attribute=const -Wtrampolines -Wstack-usage=8192 -Wvector-operation-performance -O3 -fomit-frame-pointer -finline-functions
                       CPPFLAGS: -I/home/prisms/builder-new/WeeklyDevToolsHEAD/dev_tools/local/include
                    H5_CPPFLAGS: -D_POSIX_C_SOURCE=199506L   -DNDEBUG -UH5_DEBUG_API
               Shared C Library: yes
               Static C Library: yes
  Statically Linked Executables: no
                        LDFLAGS: -Wl,-rpath,$$ORIGIN
          Extra libraries:  -lpthread -lz -lrt -ldl -lm
                Archiver: ar
               Ranlib: ranlib
           Debugged Packages:
            API Tracing: no

                        Fortran: no

                            C++: no

                  Parallel HDF5: no
             High Level library: yes
                   Threadsafety: yes
            Default API Mapping: v18
 With Deprecated Public Symbols: yes
         I/O filters (external): deflate(zlib)
         I/O filters (internal): shuffle,fletcher32,nbit,scaleoffset
                            MPE: no
                     Direct VFD: no
                        dmalloc: no
Clear file buffers before write: yes
           Using memory checker: no
         Function Stack Tracing: no
                           GPFS: no
      Strict File Format Checks: no
   Optimization Instrumentation: no
       Large File Support (LFS): yes




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