InstallShield error code -6001 when installing the MegaCore IP Library CD - InstallShield error code -6001 when installing the MegaCore IP Library CD Description You may get the following error when you install the MegaCore ® IP Library CD included with the Quartus ® II software version 6.0. Setup has experienced an error. Please do the following: - Close any running programs - Empty your temporary folder - Check your Internet connection (Internet-based Setups) Then try to run the Setup again. error code -6001 To work around this error, delete the C:\Program Files\Common Files\InstallShield\Professional\RunTime\0701 folder on your computer and reinstall the MegaCore IP Library CD. If deleting the folder does not solve the problem, rename the C:\Program Files\Common Files\InstallShield folder to C:\Program Files\Common Files\InstallShield-old and reinstall the MegaCore IP Library CD. This problem has been fixed beginnning with the Quartus II software version 6.1 MegaCore IP Library installation. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']