Error Dex.dic version 11.xxxxx is not compatible with executable version 11.xxx+1

You receive the above error when installing a service pack for your current GP version.

Dex.dic version 11.00.0218.000 is not compatible with executable version 11.00.0364.000


To resolve

• Go to program files>GP (relevant version)
• rename the dex.dic to dex_old.dic
• there will be a dex_us.dic file in there, copy the dex_us.dic
• rename the copy to dex.dic
• rerun the service pack