Error Message or LED Indication - Troubleshooting

Error Message on PC Display

• "Setup start error code 2", (also "code 193", "code 216" or "code 267") appears when I try to install the driver. What should I do?
• When I try to use the database function, the error message "Code=800401f9 Msg: Error in the DLL Source: ADODB. Connection Description:" appears. What should I do?  
• "Error: 126" appears on my Windows® XP PC during the installation of the printer driver.
• The message "Wrong media size." appears. What should I do? (P-touch Editor 5.0 for Mac)
• The message "The tape cassette installed in the machine does not match the type selected in the application." is displayed. What should I do?
• The message "Appropriate cassette not installed." is displayed. What should I do?