Error during ABAP 7.01 trial version install on Vista - installation exited

Question

im re-installing NSP trial version for the 5th time and get the error below. I followed all instructions:
- removed old installation folders
- removed th port numbers in services
- switched off AV and firewall
- removed entries from registry
- ran the regtool
- rebooted system
but still get the error below - can you please help
details
win vista enterprise SP1
intel dual core 2.8 GHz
RAM 2GB
100GB free space
32 bit os
im on a netwkr so no need for the loopback...
(May 18, 2010 6:32:25 PM), Install, com.sap.installshield.maxdb.maxdb_call_sdbinst, err, An error occurred and product installation failed.  Look at the log file C:\sapdb\NSP\log.txt for details.
(May 18, 2010 6:32:25 PM), Install, com.sap.installshield.maxdb.maxdb_call_sdbinst, err, ProductException: (error code = 601; message="An Error happened during call of MaxDB Tool sdbinst. Check end of Logfile C:/Users/XXXXX/AppData/Local/Temp/MaxDBSAPNWPREV.log")
STACK_TRACE: 22
ProductException: (error code = 601; message="An Error happened during call of MaxDB Tool sdbinst. Check end of Logfile C:/Users/whittyj/AppData/Local/Temp/MaxDBSAPNWPREV.log")
     at com.sap.installshield.maxdb.maxdb_call_sdbinst.install(maxdb_call_sdbinst.java:193)
     at com.installshield.product.service.product.PureJavaProductServiceImpl.installProductAction(Unknown Source)
     at com.installshield.product.service.product.PureJavaProductServiceImpl$InstallProduct.getResultForProductAction(Unknown Source)
     at com.installshield.product.service.product.InstallableObjectVisitor.visitComponent(Unknown Source)
     at com.installshield.product.service.product.InstallableObjectVisitor.visitInstallableComponents(Unknown Source)
     at com.installshield.product.service.product.InstallableObjectVisitor.visitProductBeans(Unknown Source)
     at com.installshield.product.service.product.PureJavaProductServiceImpl$InstallProduct.install(Unknown Source)
     at com.installshield.product.service.product.PureJavaProductServiceImpl.installProduct(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at com.installshield.wizard.service.LocalImplementorProxy.invoke(Unknown Source)
     at com.installshield.wizard.service.AbstractService.invokeImpl(Unknown Source)
     at com.installshield.product.service.product.GenericProductService.installProduct(Unknown Source)
     at com.installshield.product.service.product.PureJavaProductServiceImpl.installAssembly(Unknown Source)
     at com.installshield.product.service.product.PureJavaProductServiceImpl.access$900(Unknown Source)
     at com.installshield.product.service.product.PureJavaProductServiceImpl$Installer.execute(Unknown Source)
     at com.installshield.wizard.service.AsynchronousOperation.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
from /AppData/Local/Temp/MaxDBSAPNWPREV.log
Tue May 18 18:32:24 GMT 2010 MaxDB sdbinst: checking unpacked archive... ok
Tue May 18 18:32:24 GMT 2010 MaxDB sdbinst: installation of MaxDB Software finished successfully Tu, May 18, 2010 at 13:32:23
Tue May 18 18:32:24 GMT 2010 MaxDB sdbinst: creating database NSP...
Tue May 18 18:32:24 GMT 2010 MaxDB sdbinst: getInstalledReleasesWin(): wrong version format
Tue May 18 18:32:24 GMT 2010 MaxDB sdbinst: ERROR: Backup check for  'C:\sapdb\NSP\_tempLocation\load\load_datasave' failed:
Tue May 18 18:32:24 GMT 2010 MaxDB sdbinst: File not found: C:\sapdb\NSP\_tempLocation\load\load_datasave
Tue May 18 18:32:25 GMT 2010 MaxDB sdbinst: installation exited abnormally  at Tu, May 18, 2010 at 13:32:23
Tue May 18 18:32:25 GMT 2010 MaxDB: Error during call to sdbinst, rc= 1
Tue May 18 18:32:25 GMT 2010 MaxDB: Done with call_sdbinst
Tue May 18 18:32:25 GMT 2010 MaxDB: rc of sdbinst = 1
Tue May 18 18:32:25 GMT 2010 MaxDB: Start of CallSdbuninst
Tue May 18 18:32:25 GMT 2010 MaxDB: IndepProgPath: C:/sapdb/programs
Tue May 18 18:32:25 GMT 2010 MaxDB: dbmcli path: C:/sapdb/programs/pgm/dbmcli.exe
Tue May 18 18:32:25 GMT 2010 MaxDB: Calling check for db_enum in case of an abort
Tue May 18 18:32:28 GMT 2010 MaxDB: nsp doesn't exist. Nothing to do !
Tue May 18 18:32:28 GMT 2010 MaxDB: rc of Method: 3
Tue May 18 18:32:28 GMT 2010 MaxDB: IndepProgPath = C:/sapdb/programs
MaxDB: dbmcli_path = C:/sapdb/programs/pgm/dbmcli.exe
MaxDB: Database instance to drop: :NSP:
MaxDB: Instroot of NSP is: null
MaxDB: sdbuninst_option = :3
MaxDB: 0=uninstall all, 1=uninstall Kernel package, 2=drop database only, 3=do nothing
Tue May 18 18:32:28 GMT 2010 MaxDB: End of CallSdbuninst
Tue May 18 18:32:28 GMT 2010 MaxDB: End of uninstallation
Edited by: Joe Whitty on May 18, 2010 8:54 PM

Answer 1

I a similar problem several times trying to get my AbapTrial version to work but then everything was successful as below:
i. windows command regedit ->software and delete the whole SAP folder
ii. at least disable the services (I had old SAP.. entries) (you did windows command sc delete)
iii. I had an NSP version and so deleted the whole of C:SAP folder and c:sapdb folder
iv. I went to windows software management and removed the trial version or went to Start->Programs and deleted the Trial version there.
v. In Start->Programs->MaxDB (or, once, in software management) I deleted all MaxDB entries.
As far as I remember everything was then removed.
The successful installation then was as follows:
I successfully downloaded from http://www.sdn.sap.com/irj/scn/nw-downloads and successfully ran the installation:
1) the download wasnt possible the first few times I tried - the download popup did not appear and I received a message with the word "scnsorry" instead. I just had to keep trying.
2) I downloaded the entry
"SAP NetWeaver 7.01 SR1 SP3 ABAP Developer Edition ".
Another entry, also offered for download, "SAP NetWeaver 7.01 - ABAP Trial Version " did not install and seemed to be in error. (Installed "successfully" in just 4 minutes and showed no MaxDB files in the unzipped folder).
3) I followed the instructions and the installation (some 27 steps) ran for 7 hours.
4) I am on a laptop with Windows Vista 6.0 Build 6002 SP2. (It is in German, not English, but this was not a problem, although it is sometimes mentioned that one should use an english-language OS).
5) After installation I could log on at once.
I recommend this way because it saves so much time.
What put me on the right path was a comment by Markus Doehr on In AbapTrial7.01 NSP the Dispatcher stops after 1:15 minutes.