I am a Fidelity user and have used Wealth-Lab 6.2 for quite sometime. Last weekend I decided to upgrade to Wealth-Lab 6.6 (64-bit) on my Windows 7 machine. The installation was successful but I can not launch the application. Here is the error message:

Problem signature:
Problem Event Name: CLR20r3
Problem Signature 01: wealthlabpro.exe
Problem Signature 02: 6.6.13.0
Problem Signature 03: 528bc0b8
Problem Signature 04: WealthLab.ChartControl
Problem Signature 05: 1.0.0.0
Problem Signature 06: 528bc0b0
Problem Signature 07: f5
Problem Signature 08: 47
Problem Signature 09: System.TypeInitialization
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1033
Additional Information 1: 428a
Additional Information 2: 428ac9c323c74b4dac23c7eacf78196b
Additional Information 3: e286
Additional Information 4: e2865b94fe4976f6272ddab0f40d6de8

Any idea what went wrong?

This error was first discovered when WLP users started upgrading to 6.5. So far it affects WLP users only. The cause is still undetermined but it's easy to fix this problem by doing as advised in the Knowledge Base:

Wealth-Lab Wiki > Errors | General > Wealth-Lab Pro 6.5 crashes on start with System.TypeInitialization in WealthLab.ChartControl

In general, don't hesitate to search for solutions in the Wiki. Usually, you'll find them there for most of typical error messages.