ive been downloading ebooks with no problem for years. i have a google nexus s and have been downloading ebooks for months.... now i download the book and this message appears on my phone..."there isnt any application can open this type of file on the system. please download and install one to access it." this book is a epub . i have kobo and aldiko. as i said no problems before.....the only thing i can think of is that when my phone was updated to the newer version 4.0.4. i cant recall if this is when the problems started.
can anyone help please..... im not familiar with the workings of phones or computers......so make it easy PLEASE!!!!
thakyou ;-)

this happened also when i tried to download pdh ebook.

i really love mobile9 and would hate to lose it!!!!! please HELP