If you try to install Xcelsius 2008 on a Windows computer that has Office 2007 or Office 2010 but NOT Office 2003 installed, then you will get the following error:
“Microsoft Office XP and later applications: Excel, Word, Outlook or PowerPoint must be pre-installed.”
To solve this, download and install Microsoft’s Orca tool, which you can get from here: http://www.softpedia.com/get/Authoring-tools/Setup-creators/Orca.shtml
and possible from here:
Create a backup copy of the Xcelsius installation file, Xcelsius.msi.
Open Xcelsius.msi with Orca.
Find the Launch Condition that looks for Office 2003, as highlighted in the screen shot below.
You are looking for the Condition that says:
(EXCEL10 OR OUTLOOK10 OR WORD10) OR (EXCEL11 OR OUTLOOK11 OR WORD11) OR (EXCEL12 OR OUTLOOK12 OR WORD12) OR Installed
Change the condition; replace it with the exact number of spaces as there are letters in the condition.
Save and exit.
You should now be able to install Xcelsius 2008.