Summary

Customers experienced an issue with their application due to unsigned FNP DLLs in the latest release. They reported receiving the following error message in their logs when starting their application:

The digital signature of the Xalan-C_1_12.dll is not matching. Thus, the application cannot be started.

Symptoms

Upon investigation, it was discovered that in the most recent release, version 11.19.6, the following DLLs are not digitally signed:

Xalan-C_1_12.dll
XalanMessages_1_12.dll
xerces-c_3_2.dll

All prior versions of these DLLs were digitally signed, indicating a change in the latest release that is causing the application to fail to start due to mismatched digital signatures.

Fix Version and Resolution

We have a new 11.19.6.2 lmadmin kit available in the PLC for download, which includes the correctly signed DLLs. If you face this issue please download and use this updated version.