So we get some interesting error message when submitting a xap to Windows Phone marketplace as shown in Figure 1.1 below with the error message of “The [NeutralResourceLanguage] attribute is missing on the entry assembly.”

Figure 1.1 Missing NeutralResourceLanguage attribute error message
To avoid this problem follow the steps below or see Figure 1.2 below.
1) Right click on the main Windows Phone project and choose property
2) Click on Application tab and then click Assembly Information… button
3) Choose Neutral Language from the drop down

Figure 1.2 To avoid NeutralResourceLanguage error
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About toetapz
Henry Lee is founder of NewAgeSolution.Net and is passionate about the technology. He is also the author of the book Beginning Windows Phone 7 Development 2nd from Apress (http://www.apress.com/9781430235965). He works with various Fortune 500 companies delivering mobile applications and rich internet applications.
He recently formed start-up company called ToeTapz.com focusing his energy on delivering mobile applications in Windows Phone 7, Android and iPhone. In his spare time, he dedicates his effort to help his .NET community by delivering sessions at the technology events. He enjoys talking with other technologist about current trends in the technology and sharing business insights with fellow colleagues.
Often you will find Henry at local cigar bar enjoying a cigar and a drink trying to come up with next big mobile application.