launchpad extraction failure under aix 5.3

I previously installed the jazz 0.6 beta under aix 5.3. I have now deleted that and I'm trying to install the latest release but the installation fails with:
Extraction failed. Terminated.
while uncompressing the launchpad installer from
RTC-Standard-Full-1.0RC4-Linux-Web.sh
The '--check' option says everything is OK.
If I use '--tar vtf' it lists everything
If I use '--tar vxf' it fails with a directory checksum error (-264670272 != 46465). It does this immediately after extracting file:
./rtc/linux/plugins/com.ibm.cic.agent.core.nativeInstallAdapter.linux_1.2.2.v20071210-HEAD/META-INF
I don't know whether it's releated to the problem but this file appears twice (in 2 consecutive lines) in the output from 'tar -vtf'.
Do you know whether this should extract OK under aix 5.3?
Extraction failed. Terminated.
while uncompressing the launchpad installer from
RTC-Standard-Full-1.0RC4-Linux-Web.sh
The '--check' option says everything is OK.
If I use '--tar vtf' it lists everything
If I use '--tar vxf' it fails with a directory checksum error (-264670272 != 46465). It does this immediately after extracting file:
./rtc/linux/plugins/com.ibm.cic.agent.core.nativeInstallAdapter.linux_1.2.2.v20071210-HEAD/META-INF
I don't know whether it's releated to the problem but this file appears twice (in 2 consecutive lines) in the output from 'tar -vtf'.
Do you know whether this should extract OK under aix 5.3?
One answer

If you head over to the Eclpse wiki on Webahead, you will find
instructions on how to install on AIX.
On 2008-06-17 06:18:01 -0500,
chris.cawthorne@uk.ibm-dot-com.no-spam.invalid (cawthorn) said:
I
instructions on how to install on AIX.
On 2008-06-17 06:18:01 -0500,
chris.cawthorne@uk.ibm-dot-com.no-spam.invalid (cawthorn) said:
I previously installed the jazz 0.6 beta under aix 5.3. I have now
deleted that and I'm trying to install the latest release but the
installation fails with:
Extraction failed. Terminated.
while uncompressing the launchpad installer from
RTC-Standard-Full-1.0RC4-Linux-Web.sh
The '--check' option says everything is OK.
If I use '--tar vtf' it lists everything
If I use '--tar vxf' it fails with a directory checksum error
(-264670272 != 46465). It does this immediately after extracting
file:
/rtc/linux/plugins/com.ibm.cic.agent.core.nativeInstallAdapter.linux_1.2.2.v20071210-HEAD/META-INF
I
don't know whether it's releated to the problem but this file
appears twice (in 2 consecutive lines) in the output from 'tar
-vtf'.
Do you know whether this should extract OK under aix 5.3?