Compilation of AOT

Dear all,

Please let me know while doing the compilation of AOT, whether all user should exit from the AX system?

Also I have an other clarification. If I click on document handler or account statement screen, I got an issue where it says

"Dialog Field has no valid runnable code in method 'new'.  Then while browsing in internet i got an info saying that i need to compile the whole AX .  Please let me know Whether any other solution is applicable to fix the above solution?

Thanks,