Cannot patch touhou quest

[Tyraxx]

Hi everybody,

I have a problem with "TouhouQuest".
The game works fine, but it doesn't let me patch the game.

In game it always reminds me to update, so it's kinda annoying and of course I want to have the newest version.

So when I click to patch, it first takes very long to download the patch, than when I want to patch it, the following error message appears:

差分ファイル [C:\Users\[...]\Documents\SagiriUpdater\patch_1_0_1.exe]
差分ファイルの整合性をチェックしています...
差分を適用するフォルダ [C:\Users\[...]\東方Project\inofficial(同人ゲーム)\Touhou Quest]
差分ファイルの情報を取得しています...
旧バージョンのファイルを確認しています[MD5チェックサム]...
　　--> [C:\Users\[...]\東方Project\inofficial(同人ゲーム)\Touhou Quest\Engine.dll] MD5チェックサムを計算中...
[エラー] 旧バージョンのファイル内容が異なります(MD5チェックサムが一致しない).
差分ファイルの適用中にエラーが発生しました.
作業途中のファイルを元に戻しています...
作業途中のファイルを元に戻しました.

Anyone know a solution?

[Tyraxx]

Oh no, now the game starts to show fatal bugs
I really need to patch the game, I dunno know what to do, so for now I

*push*

[Necrotek]

As much I can guess from rough translation, the patcher thinks that your Engine.dll file has different checksum (so, probably that file was modified) and because of that the game can't be patched.

[Rei Scarlette]

Yeah, that's definitely a MD5 mismatch. There could be any number of reasons for that happening, but for now you should try reinstalling the game (back up your saves if you want) and see if that fixes it.