Would having an old version installed make a difference? I renamed my current install to "mathematica backup.app" then installed mms 10. It feels like some part

Would having an old version installed make a difference? I renamed my current install to "mathematica backup.app" then installed mms 10. It feels like some part of mms has failed without adequately reporting it. Mac OSX 10.9.4 uname -a <~/Library/Mathematica/Licensing nyx[33] Darwin nyx.local 13.3.0 Darwin Kernel Version 13.3.0: Tue Jun 3 21:27:35 PDT 2014; root:xnu-2422.110.17~1/RELEASE_X86_64 x86_64 Session log below. Mathematica 10.0 for Mac OS X x86 (64-bit) Copyright 1988-2014 Wolfram Research, Inc. In[1]:= $Version Out[1]= 10.0 for Mac OS X x86 (64-bit) (June 29, 2014) In[2]:= $VersionNumber Out[2]= 10. In[3]:= SystemInformation["Small"] Out[3]= {Kernel -> > {SystemID -> MacOSX-x86-64, ReleaseID -> 10.0.0.0 (5098698, 5098537), > CreationDate -> DateObject[{2014, 6, 29}, TimeObject[{20, 38, 32}]]}, > FrontEnd -> > {OperatingSystem -> $Failed, ReleaseID -> Missing[NotActive], > CreationDate -> DateObject[$Failed]}} In[4]:= URLFetch["http://www.google.com/" http://www.google.com/"] General::unavail: ExportString is not available in this version of the Wolfram Language. ImportString::string: First argument ExportString[{60, 33, 100, 111, 99, 116, 121, 112, 101, 32, 104, 116, 109, 108, 62, 60, 104, 116, 109, 108, 32, 105, 116, <<19641>>, 111, 100, 121, 62, 60, 47, 104, 116, 109, 108, 62}, <<2>>] is not a string. Out[4]= ImportString[ExportString[{60, 33, 100, 111, 99, 116, 121, 112, 101, > 32, 104, 116, 109, 108, 62, 60, 104, 116, 109, 108, 32, 105, 116, 101, -- Snip -- In[5]:= ExportString[] ExportString::argrx: ExportString called with 0 arguments; 2 arguments are expected. Out[5]= ExportString[]