Hello Diane,
I've heard of a few customers having issues like this after the update, but rebuilding the REPORTS.DIC file being used has normally resolved this.
If each workstation has their own local REPORTS.DIC file, you will need to perform this at each workstation. You can find the path to the REPORTS.DIC file by opening the DYNAMICS.SET file in the GP program folder, normally found at the following location.
C:\Program Files (x86)\Microsoft Dynamics\GP2018
Once opened, find the first lines in the file that have a file path in it, below the list of products installed for GP. It should look like the following if it is a local REPORTS.DIC file.
:C:Program Files (x86)/Microsoft Dynamics/GP2018/Dynamics.dic
:C:Program Files (x86)/Microsoft Dynamics/GP2018/Data/FORMS.DIC
:C:Program Files (x86)/Microsoft Dynamics/GP2018/Data/REPORTS.DIC
If it is local or shared, browse out to the location of the file and use steps in the KB article below to recreate the REPORTS.DIC.
https://support.microsoft.com/en-us/help/850465/how-to-re-create-the-reports-dic-file-in-microsoft-dynamics-gp
Once recreated, please check to see if the issue continues.
Let me know if that helps!
Thanks,
