This error indicates that environment variables that InstallShield needs to unpack an ODBC-ODBC Bridge distribution are set incorrectly and InstallShield cannot find the directory it needs. To correct this problem reset the Environment Variables that point to the two temporary directories. To do this enter Control Panel and double click the System icon. When the System Properties pane has loaded up select the Advanced tab and click into Environment Variables. Select the Environment Variables Temp & Tmp from the System Variables list and change them to point to C:\temp and C:\tmp and make sure these directories exist. Once these have been edited click ok and this will save your new values.