Community Builder back-end Blank Page

OK, Finally got a Core Dump from Apache, when we get the Segmentation Fault, while trying to Edit A Member, via CB User Manager:
Here is some info frmo the Core Dump, using gdb

Reading symbols from /usr/lib/php/modules/zip.so...done.
Loaded symbols for /usr/lib/php/modules/zip.so

Core was generated by `/usr/sbin/httpd'.
Program terminated with signal 11, Segmentation fault.
#0 0x01f1b02e in zend_assign_to_variable (result=0x0, op1=0xa8d36fc, op2=0x0,
value=0xa8d3728, type=4, Ts=0xbf3fc180)
at /builddir/build/BUILD/php-5.2.6/Zend/zend_execute.c:633
633 /builddir/build/BUILD/php-5.2.6/Zend/zend_execute.c: No such file or directory.
in /builddir/build/BUILD/php-5.2.6/Zend/zend_execute.c
(gdb) bt
#0 0x01f1b02e in zend_assign_to_variable (result=0x0, op1=0xa8d36fc, op2=0x0,
value=0xa8d3728, type=4, Ts=0xbf3fc180)
at /builddir/build/BUILD/php-5.2.6/Zend/zend_execute.c:633
#1 0x01f1bd7d in ZEND_RECV_INIT_SPEC_CONST_HANDLER (execute_data=0xbf3fc648)
at /builddir/build/BUILD/php-5.2.6/Zend/zend_vm_execute.h:791
#2 0x01ef4698 in execute (op_array=0x96c6fb8)
at /builddir/build/BUILD/php-5.2.6/Zend/zend_vm_execute.h:92
#3 0x06a08feb in _su3jdmx ()
from /usr/lib/php/modules//php_ioncube_loader_lin_5.2.so
#4 0x096c6fb8 in ?? ()
#5 0x09d309a0 in ?? ()
#6 0x09d309d0 in ?? ()
#7 0x01eb7eb2 in _ecalloc (nmemb=3208628696, size=33876640)
at /usr/include/bits/string3.h:96
#8 0x01ef4698 in execute (op_array=0xa9cce4c)
at /builddir/build/BUILD/php-5.2.6/Zend/zend_vm_execute.h:92
#9 0x06a08feb in _su3jdmx ()
from /usr/lib/php/modules//php_ioncube_loader_lin_5.2.so
#10 0x0a9cce4c in ?? ()
#11 0x00000001 in ?? ()
#12 0xbf3fca58 in ?? ()
#13 0x0202bf90 in ?? () from /etc/httpd/modules/libphp5.so
#14 0x0202bf90 in ?? () from /etc/httpd/modules/libphp5.so
---Type <return> to continue, or q <return> to quit---
#15 0x00000015 in ?? ()
#16 0xbf3fca78 in ?? ()
#17 0x01ee0066 in _zend_hash_index_update_or_next_insert (ht=0xbf3fd8c8,
h=3208634120, pData=0x2c, nDataSize=0, pDest=0x0, flag=177026812)
at /builddir/build/BUILD/php-5.2.6/Zend/zend_hash.c:388
#18 0x01ef4698 in execute (op_array=0xa9c7770)
at /builddir/build/BUILD/php-5.2.6/Zend/zend_vm_execute.h:92
#19 0x06a08feb in _su3jdmx ()
from /usr/lib/php/modules//php_ioncube_loader_lin_5.2.so
#20 0x0a9c7770 in ?? ()
#21 0x00000000 in ?? ()

Looks like a bad ioncube package. Please check that you've downloaded the correct ioncube package for your server.

OK, well we ARE on a new Server. Although this problem was not occuring before we upgraded CB from 1.7 to 1.8
How do I identify the correct ioncube package for our Server?
This sounds complex. What is involved in doing this?

It depends, did you have to setup ioncube or did your host? Perhaps you don't have ioncube setup at all and it's simply missing. You can check by viewing Site > System Information > PHP Information then search "ioncube" to see if it shows up. You should contact your host however for best method for setting up ioncube as it can vary host by host.

Yep, it shows up.
This program makes use of the Zend Scripting Language Engine:
Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies
with the ionCube PHP Loader v3.1.29, Copyright (c) 2002-2007, by ionCube Ltd.

I assume this is good?
What should I do next?