When i updated the program after the update was complete (it is the 0.7.3.1 version) and i opened the game it pops up a a box that says:

"Failed to check assembly. Please re-install PPD by lastest PPDInstaller.:
PPD.exe:Version unmatch,0.7.3.0,0.7.2.0"

and alot of more lines just saying everything is unmatching

But how can i re-install it by the lastest version?
Or what can i do?

I have Windows 7 Home Basic with 64 bit system

There are several ways to fix it.

1) Reinstall PPD
Download the latest PPDInstaller and install to the same folder.
This will overwrite config file(PPD.ini, etc...), so If you want to set default, this way is the best

2)Change install.info and Reupdate PPD
PPD record which version is installed in install.info.
install.info is located in PPD folder.
Open its file(just txt file) with text editor, and edit
[InstallVersion]0.7.3.1
to
[InstallVersion]0.7.2.1
and save file.
You can reupdate with this way.

3)Update manually
You can download update file manually.
Update file is located like below
http://projectdxxx.me/update/PPDDiff0731_x86.zip
So, you should get PPDDiff0730_x64.zip and PPDDiff0731_x64.zip
(If you have installed x64 version PPD, otherwise x86)

I recommend 2), then if it has no effect, 3) or 1)

Thanks it worked, i have one more question, now that i re-installed PPD the connectpic or the line that joints together double notes, triple notes, etc, it doesn't appears, and i don't know how to make it appear. Thank you for your help

Refer this thread.
forum_thread/182

Thanks!!!