Safari Crashes On Opening - Webcore Plugin Issue?

[Soxophus]

Every time Safari tries to open it crashes due to an issue with webcore and I get this error log. This has happened since most recent safari update on 18 March 2015.

First part of error log is here. Remainder is attached. Can anyone advise how to fix it?

Process: Safari [372]
Path: /Applications/Safari.app/Contents/MacOS/Safari
Identifier: com.apple.Safari
Version: 8.0.4 (10600.4.10.7)
Build Info: WebBrowser-7600004010007000~1
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Safari [372]
User ID: 505

PlugIn Path: /System/Library/StagedFrameworks/Safari/WebCore.framework/Versions/A/WebCore
PlugIn Identifier: com.apple.WebCore
PlugIn Version: 10600 (10600.4.10.7)

Date/Time: 2015-03-25 20:25:52.915 +0000
OS Version: Mac OS X 10.10.2 (14C1514)
Report Version: 11
Anonymous UUID: EF677D96-DD73-041E-AE4A-CEB8AAECB69C


Time Awake Since Boot: 160 seconds

Crashed Thread: 0

Exception Type: EXC_BAD_ACCESS (Code Signature Invalid)
Exception Codes: 0x0000000000000032, 0x00000001118ad000

kernel messages:
-1 sec CODE SIGNING: cs_invalid_page(0x1118ad000): p=372[Safari] final status 0x3004a00, denying page sending SIGKILL
-1 sec CODE SIGNING: process 372[Safari]: rejecting invalid page at address 0x1118ad000 from offset 0x285c000 in file "/System/Library/StagedFrameworks/Safari/WebCore.framework/Versions/A/WebCore" (cs_mtime:1425520586.0 == mtime:1425520586.0) (signed:0 validated:0 tainted:1 wpmapped:0 slid:0)
-9 sec CODE SIGNING: cs_invalid_page(0x10eddb000): p=366[SafariDAVClient] final status 0x3004200, denying page sending SIGKILL
-9 sec CODE SIGNING: process 366[SafariDAVClient]: rejecting invalid page at address 0x10eddb000 from offset 0x285c000 in file "/System/Library/StagedFrameworks/Safari/WebCore.framework/Versions/A/WebCore" (cs_mtime:1425520586.0 == mtime:1425520586.0) (signed:0 validated:0 tainted:1 wpmapped:0 slid:0)
-19 sec CODE SIGNING: cs_invalid_page(0x106428000): p=363[SafariDAVClient] final status 0x3004200, denying page sending SIGKILL
-19 sec CODE SIGNING: process 363[SafariDAVClient]: rejecting invalid page at address 0x106428000 from offset 0x285c000 in file "/System/Library/StagedFrameworks/Safari/WebCore.framework/Versions/A/WebCore" (cs_mtime:1425520586.0 == mtime:1425520586.0) (signed:0 validated:0 tainted:1 wpmapped:0 slid:0)
-30 sec CODE SIGNING: cs_invalid_page(0x10d811000): p=359[SafariDAVClient] final status 0x3004200, denying page sending SIGKILL
-30 sec CODE SIGNING: process 359[SafariDAVClient]: rejecting invalid page at address 0x10d811000 from offset 0x285c000 in file "/System/Library/StagedFrameworks/Safari/WebCore.framework/Versions/A/WebCore" (cs_mtime:1425520586.0 == mtime:1425520586.0) (signed:0 validated:0 tainted:1 wpmapped:0 slid:0)

VM Regions Near 0x1118ad000:
__TEXT 00000001107f1000-00000001117aa000 [ 15.7M] r-x/rwx SM=COW /System/Library/StagedFrameworks/Safari/WebCore.framework/Versions/A/WebCore
--> __DATA 00000001117aa000-0000000111965000 [ 1772K] rw-/rwx SM=COW /System/Library/StagedFrameworks/Safari/WebCore.framework/Versions/A/WebCore
__DATA 0000000111965000-000000011196f000 [ 40K] rw-/rwx SM=NUL /System/Library/StagedFrameworks/Safari/WebCore.framework/Versions/A/WebCore