Follow these steps from the following SAP Note 2077101 - Trouble shooting - Addon Installation and Initialization
Here is the section that applies to the problem
Proceed as follows:
1. Stop SAP Business One.
2. Log off all users from the affected database.
3. Back up the affected database.
4. Run the following queries on the affected database:
- delete from OARI
- delete from ARI1
5. Delete temporary folders:
%userprofile%\AppData\Local\SAP
%userprofile%\AppData\Local\VirtualStore\Program Files (x86)\SAP
%Temp%
6. Start SAP Business One as Windows administrator.
7. Ensure the add-on reg-files 32-bit meet the SAP client 32-bit (add-ons 64-bit meet the SAP client 64-bit)