ERROR: SY_NoCompany when nSetDate is called

The company I used was deleted by accident (the folder was removed from the server). After that, the company was recreated, but the Company Key is different. I have an application that uses the MAS BOI to read and write information into MAS. I already made sure that the new company allows External Access and almost everything works fine, except the module S/O. I have 2 modules, one to update Customer Information (A/R) and one to create a Sales Order (S/O). The module to update A/R works fine. The module to create a Sales Order fails and throws the following error when it attempts to call the nSetDate method: SY_NoCompany. I read the MAS BOI documentation and I see errors like SY_NoCompanySet, but not an error that is named just SY_NoCompany. The A/R module works fine with nSetDate. Any ideas?