I'm going to say upfront that I have never encountered that error and have no clue what it means. So if someone comes along and says for sure what the solution is, ignore this post.
I would follow the steps below carefully in the order they're listed:
1. Run an anti-virus/anti-trojan/anti-malware scan on your computer.
2. Check to ensure there isn't a problem with your OS (based on the one listed in your profile): visit
https://www.eightforums.com/tutorials/3 ... ml#option2. Run sfc /scannow from an elevated command prompt. Instructions are similar for Windows 10 and 11: visit
https://www.majorgeeks.com/content/page ... annow.html.
3. Run windows update
For Windows 8,
a)Swipe in from the right edge of the screen, tap Settings, and then tap Change PC settings. (If you're using a mouse, point to the lower-right corner of the screen, move the mouse pointer up, click Settings, and then click Change PC settings.)
b)Tap or click Update and recovery, and then tap or click Windows Update.
c)Tap or click Check now.
d) Install updates
For Windows 7, visit
https://www.wikihow.com/Check-for-Updates-for-Windows-7.
For Windows 10, visit
https://www.tenforums.com/tutorials/480 ... -10-a.html
For Windows 11, visit
https://www.elevenforum.com/t/check-for ... ates.5058/
4. Download the free version of Revo Uninstaller:
https://www.revouninstaller.com/start_f ... nload.html and install it.
5. Uninstall any previous Freephoneline installation using Revo Uninstaller. Backup your registry, and create a system restore point if given the option. (Safe) Scan for leftover traces of FPL (Freephoneline) in your registry using Revo Unistaller. Remove them. Uninstall Revo Uninstaller afterwards if you wish.
6. Reboot computer
7. Freephoneline uses Java, so ensure your
32 bit version of Java is up to date:
https://www.java.com/en/download/manual.jsp. If you encounter Java errors, uninstall all versions of Java on your computer. Then install the latest 32 bit version of Java again.
8. Delete the Freephoneline installer file that you downloaded previously.
9. Download Freephonline desktop app again after logging in here:
https://www.freephoneline.ca/downloadDesktopApplication
10. After downloading, temporarily disable any VPN clients you may be running on your computer.
11. Right click on the file you downloaded, and select "run as administrator"
12. Allow Freephoneline to install completely.
Keep in mind that it's possible for antivirus products to interfere with the installation of safe files.
If the desktop app successfully installs but you can't get it to run, try right clicking on it, and selecting "run as administrator"
If that doesn't work, sorry, I'm out of ideas. Typically I would look at Event Viewer, but that's probably just going to say FPL installer crashed.
Unfortunately, this app has been out of development for years now. I'm not sure that you'll receive further advice.