When placing the tag mnemonic and possibly other items in Create Symbol, the following error message is displayed.
Internal ErrorError Message: Can't find this element in modelreference.TargetSite: Bentley.Interop.MicroStationDGN.Element GetElement(System.String, Bentley.Interop.MicroStationDGN.ModelReference)DeclaringType: MicEctEcad.NETMicEctEcad.UtilityAttributes: public staticMemberType: Method
When the error message is acknowledged, the symbol creation wizard disappears.
In one case, the problem was a corrupt seed file.
On the first step of the wizard in Create Symbol note the seed file listed.
Replace this seed file with a known good version. The seed files are typically found in the "\promis-e Data\Templates\Page" folder or the "\Substation Data\Templates\Page" folder.The as-installed version of the seed files can be found in the Data folder archive