PCPro Fatal Error Solution for the NEC SL2100 and SL1100

This Tech Tip will help you identify and resolve the issue. This problem typically occurs when you attempt to open a phone system configuration using an outdated or incompatible version of the PCPro programming software.

Quick Solution

Make sure you are using the correct version of the PCPro software that matches the firmware version of your NEC SL2100 or SL1100 system.

Recommended Steps

Check the Phone System Firmware Version
- Option A: Check Firmware via WebPro or PCPro
  - WebPro:
    1. Log into WebPro.
    2. The Main Software Version will display near the top of the Home screen.
  - PCPro:
    1. Launch PCPro and connect to the system.
    2. Go to the Home tab.
    3. Look for the Software Version displayed in the connection information area.
- Option B: Check Firmware via a Digital Phone
  1. Go to any digital NEC phone (e.g., multiline display phone).
  2. Press the Menu soft key.
  3. Dial 93 using the keypad.
  4. Press the Select soft key.
  5. The system firmware version will be displayed on the phone’s screen.Via
    You can find this in WebPro under the Home screen or by accessing the phone system via PCPro and checking the version information before opening a database.
Download the Latest Compatible PCPro Version
Visit the authorized NEC download portal or refer to your system provider to get the correct PCPro version for your firmware level. Each firmware version requires a matching PCPro version.
Uninstall Old Versions (If Needed)
If you have multiple versions of PCPro installed, uninstall them first to prevent version conflicts.
Reinstall Correct Version
Install the proper version and relaunch the application. If you no longer receive the fatal error, the issue is resolved.

Additional Tip

Avoid using old configuration files (like .sl2) with newer PCPro versions unless they were created using that version. Opening mismatched files can lead to corrupt database warnings or additional errors.