yes, i suspect java update runtime 24 for windows XP is somehow responsible for a missing option to export to *.mov (paco did say something about no more support in java for quicktime and vice versa)

my MacOSX still can export (running a older java i assume), see picture.

i still see the export option in my Windows 7 Ejs that still is on a older version of Java.

i recommend to all Ejs users not to update to Java runtime 24