Hi,
I'm having trouble installing in Ubuntu 12.04

I've tried the suggestions at http://help.infinitekind.com/kb/frequently-asked-questions-2/moneyd...

If I try
sudo add-apt-repository ppa:nilarimogard/webupd8
sudo apt-get update
sudo apt-get install update-java

then I get the following output:
The following NEW packages will be installed:
update-java 0 upgraded, 1 newly installed, 0 to remove and 9 not upgraded.
1 not fully installed or removed.
Need to get 4,318 B of archives.
After this operation, 45.1 kB of additional disk space will be used.
Get:1 http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu/ precise/main update-java all 0.5.2-2~webupd8 [4,318 B]
Fetched 4,318 B in 1s (3,139 B/s)
Selecting previously unselected package update-java.
(Reading database ... 259300 files and directories currently installed.) Unpacking update-java (from .../update-java_0.5.2-2~webupd8_all.deb) ...
Setting up moneydance (2011.803) ...
Preparing JRE ...
/var/lib/dpkg/info/moneydance.postinst: 22: /var/lib/dpkg/info/moneydance.postinst: bin/unpack200: not found Error unpacking jar files. Aborting.
dpkg: error processing moneydance (--configure):
subprocess installed post-installation script returned error exit status 1 Setting up update-java (0.5.2-2~webupd8) ...
Errors were encountered while processing:
moneydance E: Sub-process /usr/bin/dpkg returned an error code (1)

If I try:
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer

then the output ends with:
Oracle JDK 7 installed
update-alternatives: using /usr/lib/jvm/java-7-oracle/jre/lib/amd64/libnpjp2.so to provide /usr/lib/mozilla/plugins/libnpjp2.so (libnpjp2.so) in auto mode.
Oracle JRE 7 browser plugin installed
Setting up gsfonts-x11 (0.22) ...
Errors were encountered while processing:
moneydance E: Sub-process /usr/bin/dpkg returned an error code (1)

After doing both of these, I rebooted and tried to install from the .deb package via the Ubuntu software centre again, installation fails, and I get the following error log:
(Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 259360 files and directories currently installed.) Preparing to replace moneydance 2011.803 (using .../Downloads/moneydance.deb) ...
rm: cannot remove `/usr/share/applications/moneydance.desktop': No such file or directory
Unpacking replacement moneydance ...
Setting up moneydance (2011.803) ...
Preparing JRE ...
/var/lib/dpkg/info/moneydance.postinst: 22: /var/lib/dpkg/info/moneydance.postinst: bin/unpack200: not found Error unpacking jar files. Aborting.
dpkg: error processing moneydance (--install):
subprocess installed post-installation script returned error exit status 1

What can I do? It sometimes looks as if failed previous installations are interfering. How can I fully purge a previous (failed) install?

Thanks for your help. I am very much looking forward to having moneydance up and running again.