To reproduce:

1. On any of the windows 2000, XP, or 2003 install language pack for languages such as Chinese, Japanese, and Korean if it does not come with the OS.

2. Install JDK/JRE 1.4.2_01 or 1.5.0.
3. And choose to customize the installation path.

4. Modify the installation path and insert a double bytes char.
5. At the point when installer is creating jar file the installer will fail and pop up the error dialog with error code 1722.
Note: The tested OS is in English and after installing language pack, the lcoal/regional setting can stays English or to the specific locale used in the path. 

We should detect this situation using regutils, and tell the user that they need to choose a new path without multi-byte characters.
  xxxxx@xxxxx   2004-08-04

N/A

You have to detect from either  the installer or regutils function.
Most likely it will be  the latter, I am not sure how to do this, we
will need to check with Sherman, Naoto or  Norbert.
But my guess at this time is that,if we need this functionality
in Regutils we may need to link with unicows.dll (I think) which
is in the coreX.zip file, which we cant unzip. OR we have to bundle
this dll into the installer. 
-Kumar

jiij

Since JRE 1.5.0_02, this bug no longer needs a double-byte character inserted into the installation path to rear its ugly head.  See my comments since 3/31/2005 on bug 4895647 for more info.