Not in the j2se project. The ant does not find the build-impl.xml at all.
Can you attach ant -debug output? Can you try to build it from command line?

It seems either java or ant issue.

Reproducible for me on Linux FC5 w/ UTF-8 system locale and Czech national chars
in project name/path and main class name using JDK 6 b97 and a plain English dev
build.

Setting ro project property: ant.file.řehoř ->
/home/jglick/NetBeansProjects/řehoř/build.xml
Project base dir set to: /home/jglick/NetBeansProjects/řehoř
 +Target: 
Importing file nbproject/build-impl.xml from
/home/jglick/NetBeansProjects/ÅehoÅ/build.xml
/home/jglick/NetBeansProjects/ÅehoÅ/build.xml:7: Cannot find
nbproject/build-impl.xml imported from
/home/jglick/NetBeansProjects/ÅehoÅ/build.xml
        at org.apache.tools.ant.taskdefs.ImportTask.execute(ImportTask.java:128)
[....]

Does not occur if you configure a separate Ant install dir in Ant Settings. Only
if you are using the default bundled Ant.

Not reproducible on JDK 5.

Not a project system bug.

Correction: doesn't matter whether you are using the bundled Ant vs. external.
But if your external Ant includes xercesImpl.jar then the bug will not appear.
The bug *is* specific to Ant 1.6.5 (or earlier); it does not appear with Ant
1.7.0 (currently in beta). From looking through a debugger, it seems the issue
is that

1. Newer implementations of SAX apparently escape non-ASCII characters in
org.xml.sax.Locator.getSystemId(), which I think is correct. This escaping is
done in the usual way: %xx encoding of bytes of the UTF-8 representation.

2. org.apache.tools.ant.launch.Locator.decodeUri is broken in Ant 1.6.5; it uses
ISO-8859-1 encoding for unescaped URIs, which is wrong.

In fact the bug is reproducible from the command line if you run Ant 1.6.5 with
lib/xercesImpl.jar deleted under JDK 6.

Ant 1.7.0 corrects Locator.decodeUri to use UTF-8 after unescaping:

http://svn.apache.org/viewvc/ant/core/trunk/src/main/org/apache/tools/ant/launch/Locator.java?r1=278497&r2=349552

So suggested release notes entry:

---%<---
If you are running the IDE on JDK 1.6 (regardless of what Java version you use
to build your projects), and the file path to your project contains national
characters (not in the ASCII character set), you may encounter an error when
building or running your project:

<<some garbage>>/build.xml:7: Cannot find
nbproject/build-impl.xml imported from
<<some garbage>>/build.xml

This is a bug in Ant 1.6.5 triggered by newer XML parsers. If this occurs, you
may use any of the following workarounds:

1. Place your project in a folder which does not use such characters. (Rename
Project in the project's context menu.)

2. Run the IDE under JDK 5.

3. Download Ant 1.7.0. In Tools | Options | Miscellaneous | Ant, switch Ant Home
to be this Ant installation.

4. In Tools | Options | Miscellaneous | Ant, click Manage Classpath. Click Add
JAR/ZIP. Select the file xerces-<<version>>.jar from the directory
ide<<number>>/modules/ext in your NetBeans installation.
---%<---

Thanks for catching this.

*** Issue 88913 has been marked as a duplicate of this issue. ***

v.

I don't see the workaround mentioned below in nb55 rel notes.

What is the best way to get this info to netbeans.org so its seen
by most people ?  I can pursue that.

I did the 2 workarounds about ant using 1.7 or adding xerces to its cp
and it works.

BTW will ant 1.7 be in nb6 ?  I hope so since don't think users
should be required to do these workarounds just because they
want to use national characters.

ken.frank@sun,com


ken.frank@sun.com

I have no control over the contents of the release notes for 5.5 other than
adding the RELNOTE keyword.

NB 6 dev builds already bundle Ant 1.7.0.

*** Issue 100503 has been marked as a duplicate of this issue. ***

*** Issue 111468 has been marked as a duplicate of this issue. ***