Base Camp Won't Open

Well there could be various causes for this, you might try first uninstalling then reinstalling basecamp. Also though see this thread
https://forums.garmin.com/showthread.php?34832-CRITICAL-BaseCamp-4-1-1-won-t-launch-anymore/page3

I've tried uninstalling and reinstalling BaseCamp..... I've also updated windows and tried the un/reinstall again.... I get the same error......

You might have a borked .NET installation. What OS are you running?

I am having the same problem. "BaseCamp Application has stopped working" ; my OS is Windows 7 with 16 GB Ram. The details of the MS error popup are:

Problem signature:
Problem Event Name: APPCRASH
Application Name: BaseCamp.exe
Application Version: 4.2.3.0
Application Timestamp: 524086ef
Fault Module Name: KERNELBASE.dll
Fault Module Version: 6.1.7601.18229
Fault Module Timestamp: 51fb1116
Exception Code: e06d7363
Exception Offset: 0000c41f
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1033

I have uninstalled / reinstalled BaseCamp. I have rebooted. I have booted into Safe mode. I have tried running BaseCamp in compatibility XP mode. I have tried running it as an administrator. Other mapping software runs fine, such as MapSource. Google Earth runs fine. I have .NET 4.x installed. WIC is installed.

Anyone with ideas?

Problem solved re. BaseCamp not starting. It was a registry problem. I called Garmin support; they took over control of my computer and found the problem in about 20 minutes. Now I want to display maps in 3D. Still working on that.

Did they tell you what the registry problem was?

Please see this thread:

https://forums.garmin.com/showthread.php?48152-Garmin-Basecamp-is-not-starting-anymore&p=223133#post223133

A couple of users having this same problem updated to 4.2.3 and it was fine. Please let me know if this works for you. If it does not I will look closer at the problem.