Common problems that appear during the installation process are described in the K18485: FAQ: Migrating to the new version Knowledge Base article.
Please pay special attention to paragraph 5.
I hope you will find this information helpful.
If you need additional product information, write to us at email@example.com or call us at +1 (818) 844-3383
DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, along with high-performance HTML JS Mobile Frameworks for developers targeting iOS, Android and Windows Phone. Whether using WPF, Silverlight, ASP.NET, WinForms, HTML5 or Windows 8, DevExpress tools help you build and deliver your best in the shortest time possible.