Reproducible in both JDK/JRE installer
Steps to reproduce:
1) Launch JDK installer
2) Agree to license agreement and click on next
3) Now you are in "J2SE Development Kit 5.0 - Custom Setup"
   click on change button, It will popup another dialog which
   looks like filechooser, here from "Look in" combo select CD drive
   and it will display message "Internal Error 2330. 87, D:",
   (Consider attachment "invalid_1.png")
   This should rather display meaningful message and should never
   say "Internal Error"
4) Now in Folder name textfield type
   <CDDRIVE>\Program files\jdks1.5.0\ (CDDrive> to be replace
   by cd drive of system, It display following error message
   "Error 1324.The path Program files contains an invalid character
   (Consider attach image invalid_2.png)
   While here ideally it should say
   - Drive is not valid
   - Or drive is not writable


MsiExec version on system: 2.00.2600.1183
OS: Windows 2000 Professional