When upgrading to to 
Image Added version 8.1.8.0, there is a possibility that workflows with the IPDR SP agent could become invalid. This is due to an issue with compiling when the package name of the IPDR SP UDR has component names that begins with numbers. Due to the renaming of the IPDR SP UDR package names, existing workflows using these UDRs will no longer be valid. To fix the invalid workflows, you may need to reset the input in the Analysis agents that are receiving these UDRs or update IPDR SP UDR type cast in APL code accordingly.