For a listing of features and bug fixes by build/date, please see INFO: E-Prime 1.2 Change History 
What has changed in E-Prime 1.2?
E-Prime 1.2 includes everything in E-Prime 1.1 SP1, SP2, SP3 and also addresses the following issues and introduces the following features:
INFO: Clarification of authorized use of E-Prime 
NEW FEATURE: CLng wrapper added during code generation to assist in Startup Info properties 
NEW FEATURE: Windows XP 64-bit Edition Support in E-Prime 
NEW FEATURE: Objects log with less string literals in effort to reduce "Script Too Large" errors 
NEW FEATURE: E-Prime installation shows message indicating Windows XP 64-bit drivers are not supported 
NEW FEATURE: OnsetSignalDataPort and OffsetSignalDataPort permit wider range of values 
NEW FEATURE: Most Recently Used (MRU) on file menu for E-Prime experiments expanded from four (4) to eight (8) entries 
NEW FEATURE: Added verbose information to "insert hardware key now" dialog to allow New Hardware Wizard enough time to find hw key 
See article 17878 (direct link coming soon)
NEW FEATURE: Ability to configure toggle key (CapsLock, NumLock) behavior 
NEW FEATURE: Verbose description shown during SoundDevice.Open to better assist mismatch errors 
See article 17875 (direct link coming soon)
NEW FEATURE: E-Prime AutoUpdate (ability to check web and prompt when updates to E-Prime are available) 
NEW FEATURE: Welcome to E-Prime on first run of E-Studio and Help menu 
See article 17871 (direct link coming soon)
NEW FEATURE: E-Studio prompts during first run (intro, welcome, support, timing info) removed 
NEW FEATURE: Add/Remove dialog support link in XP includes updated support URLs 
NEW FEATURE: Finish dialog in E-Prime installation includes update URL for support services 
NEW FEATURE: Removed informational dialogs during installation 
NEW FEATURE: E-Prime installation using HASP driver version 4.98 
See article 17864 (direct link coming soon)
NEW FEATURE: Use better floating point precision to more accurately report SRBOX timing (1.0 to 08 StdDev) 
See article 17860 (direct link coming soon)
NEW FEATURE: 32-bit color support used in Package Add dialog and Experiment Object dialogs for richer icons. 
NEW FEATURE: Clock.Information placed in context to E-Studio ebs generation, which provides information about the E-Prime clock 
NEW FEATURE: E-Studio will enumerate USB hardware keys on system in the event multiple PST or 3rd party HASP are connected 
NEW FEATURE: SegmentCopyHeight and SegmentCopyVerticalOffset default values changed 
See article 17293 (direct link coming soon)
NEW FEATURE: Show more verbose errors in E-Run 
NEW FEATURE: More verbose error information shown when clock cannot be initialized at start of experiment 
NEW FEATURE: Ensure that clock is moving forward at start of experiment (for custom clocks) 
NEW FEATURE: SetYieldDuringLongOperations default value changed 
NEW FEATURE: E-Prime installation requires installing Internet Explorer 6 
NEW FEATURE: Ability to use network sockets (SocketDevice) in E-Basic runtime/script 
NEW FEATURE: Clock.Information property added 
See article 18092 (direct link coming soon)
See article 18086 (direct link coming soon)
BUG: Setting RandomSeed StartupInfo value is ignored when attempting to replicate experiment order 
BUG: Toggle Keys (NumLock, CapsLock) behavior not as expected 
BUG FIX: Experiment using SRBOX causes fatal system crash (BSOD) at end of experiment run 
See article 17948 (direct link coming soon)
See article 17924 (direct link coming soon)
BUG: Welcome web page appears behind E-Studio window 
BUG: E-Studio window does not appear on top when launched from Start Menu or double click experiment file from Desktop 
See article 17919 (direct link coming soon)
See article 17918 (direct link coming soon)
BUG: PackageCall Routine drop down shows no choices 
BUG: Accessing Device.History (InputHistoryManager) results in runtime error 
BUG: Parallel Port HASP hardware key not recognized during E-Prime installation or running of E-Studio 
See article 17881 (direct link coming soon)
BUG FIX: Windows ME shows "file not found" message when loading read only files and hidden .es extension 
BUG FIX: Unable to open registry key error message during E-Prime installation 
BUG FIX: E-Prime indicates negative RTs when FlushInputBuffer = Yes 
BUG FIX: WaitForVerticalBlank may return immediately when called in succession (causing unexpected display durations) 
BUG FIX: PickOne (used in Counterblancing) fails when item used (Subject, Session, Group) is larger than 32767 
BUG FIX: SlideText object displays or paints too much text (out of bounding rectangle) when height small 
BUG FIX: Unable to use mouse scrolling in InLine 
BUG FIX: Display Echo Property Page does not show proper pixel settings if they match drop down percentage 
BUG FIX: Canvas commands (Canvas.Rect, Canvas.Clear) do not operate properly in 256 color (8Bpp) mode 
BUG FIX: Canvas drawing commands not drawing accurately 
BUG FIX: E-Merge folder view continually repeats folder listing (due to user security) 
BUG FIX: Cannot load sound file after using Rte.DeviceManager.Suspend/Resume or Ctrl+Alt+Shift abort sequence 
All updates in 1.0, 1.1, SP1-SP3
INFO: E-Prime 1.1 Service Pack 3 
See article 17346 (direct link coming soon)
INFO: E-Prime 1.1 Service Pack 1 
INFO: Changes between E-Prime 1.0 and E-Prime 1.1 
Where can I download E-Prime 1.2?
All downloads are available in E-Prime Web Support under the Downloads section.
Is there anything special to installing E-Prime 1.2?
You can install E-Prime 1.2 on a fresh system or upgrade from any previous version of E-Prime.
NOTE: On systems with security, you must be a Administrator or Power User. If you are a "guest" or do not have the security rights to install software, you will receive an error when trying to install.
End users will use the same serial number and hardware key shipped with their original order to access E-Prime 1.2.
Should I update to E-Prime 1.2?
Most labs should move to E-Prime 1.2 to obtain the latest updates to E-Prime.
There are cases where a lab should not. For example, continuing studies.
In addition, if you have an "E-Prime Extensions", interfacing with external equipment, or using a 3rd party PackageCall, you should contact that vendor to ensure you are using a compatible version of E-Prime and additional add-on software or hardware.
NOTICE TO INVIVO IFIS-SA/ELOQUENCE CUSTOMERS: Invivo has requested that PST post notice to all current and future IFIS-SA/Eloquence customers that E-Prime 1.2 is NOT compatible with IFIS 1.1 software and is NOT approved for use or installation on any IFIS-SA/Eloquence system. Installing E-Prime 1.2 on an IFIS-SA/Eloquence workstation will result in a failure to launch experiments from the IFIS System Manager Client application. Please contact email@example.com for further information.
Are E-Prime 1.1 files compatible with E-Prime 1.2?
Yes, experiment *.es and data *.edat files created in E-Prime 1.1 are backwards compatible with E-Prime 1.2 and vice versa. Any script additions introduced in E-Prime 1.0, 1.1, or 1.2 that break syntax compatability are noted in the KB.
I have E-Prime 1.0, what should I do?
There are no updates available for E-Prime 1.0. PST encourages users to upgrade to E-Prime 1.2 and then apply any updates available.
I have Windows 95, what should I do?
Microsoft retired Windows 95 in 2000. Therefore, all systems that have Windows 95 should upgrade to a newer operating system. If the machine currently running Windows 95 cannot upgrade to a newer operating system, then a brand new machine should be considered. Support for Windows 95 in E-Prime has been discontinued.