向電子書(shū)制作軟件高手請教：編譯出的電子書(shū)為何無(wú)法正常顯示？

　　諸位大蝦，我用 Natata eBook Compiler v3.3.3 軟件制作電子書(shū)，打開(kāi)電子書(shū)后卻彈出：

　　"Cannot focus a disabled or invisible window"

　　電子書(shū)內的目錄也能正常顯示，我點(diǎn)擊目錄里任何一章卻總是彈出：

　　“請求的資源在使用中”

　　實(shí)在搞不懂為何出現上述情況，請高手們不吝賜教！

　　在線(xiàn)等，不勝感激！

　　注：目錄能正常顯示，但書(shū)內章節則顯示不出一個(gè)字。

　　外國朋友如懂行也可以賜教。謝謝！

　　Hello Friend,

　　I came across one problem. Could you help me? Thanks in advance!

　　The software Natata eBook Compiler v3.3.3 is professional. However,I run the eBook after I compile my novel. A dialogue jumps out.

　　"Cannot focus a disabled or invisible window"

　　Table of content is displayed properly on the left side but when I click on any chapter in the table of content, another dialogue always jumps out.

　　“Materials required are being used.”

　　Could you help me to resolve the problem? Thanks so much!

　　Happy New Year!

　　Best regards!

　　Flare Lu