To upgrade Interspire Website Publisher to an new release (e.g. 4.5.0 to 4.5.1) follow these instructions:
- Visit your client area at http://www.interspire.com/clientarea/
- Download the zip package for your latest version (not the exe file)
- Unzip the package and locate the /docs/upgrade.txt file and follow the intructions in there.
- If you're just updating a minor version (that is, only the 3rd number has changed: 4.5.x) then you can just look at the /docs/changelog.txt file to see what has changed in the new versions and only upload those files in addition to the /docs/ folder and the /lib/common.defines.php (this is important, these files contain version information and without them your application may not function).