Please be sure to download and install BOTH the GCA 4 Patcher and the GCA 4 Data Update. Also, note that we may release a data update in the future without releasing a patch at the same time, so check here periodically to see if a new data update has been released.

GCA 4 Patcher (4.0.356) -- The GCA 4 Patcher will patch *only* the GCA4.EXE program executable, and supporting run-time files. It will not update any data files, character sheets, etc. The patch will update existing GCA 4 release installations to version 4.0.356, which is largely a maintenance and fixes release.

You may need to turn OFF your Anti-Virus or Anti-Malware programs for the duration of the patch process. Patching appears to such programs very much like malware injecting itself into another program.

GCA 4 Data Update (13MAR2008) -- The GCA 4 Data Update will update *only* the data files. It will install all the current versions of various types of data, including data files for GURPS books, character sheets, export filters, any included graphics, etc. This Update will overwrite any existing versions with the versions included in the Update. If you have made changes to any of the files that you wish to preserve, you should back them up before running the Update, or change their file names so that they will not be replaced.

This update includes updated versions of all existing GURPS book data files, and the included character sheets.

Complete list of changes can be found in the following:

• Changes from previous version.
• Changes to character sheets.
• Changes to the data files.