Great news!  Media Composer v8.9.4 launched today, Monday, December 4, 2017 at 3:00 pm EDT.   

Location at Launch:  Media Composer v8.9.4 is available from My Avid Master Accounts, Application Manager, and the Avid Download Center (login and password required) @3:00 PM EDT.  

Installer:  There is a Media Composer v8.9.4 Mac and v8.9.4 Win Installer.    

Patch - There are NO Patch Installers. There are updates on the patch page, but they are full installers only there because some users only go to the editor patch folder to grab the latest build.

What’s New in v8.9.4: The following has been changed in this release.

• Support for HiRes Monitors with Mismatched Scaling - In previous releases, Media Composer supported dual HiRes or HiDPI monitors when both monitors were set to the same scaling. With this release, you can mix 100% and 200% scaling for Win10 dual monitor setups.
• Go to Next/Previous Event - The Rewind and Fast Forward buttons have been renamed and have new icons to reflect what the buttons actually do. The new names are Go to Next Event and Go to Previous Event.
• Composer Settings: Move (Formally the FF/Rew tab) - The options in the Move tab control how the position indicator moves when you use the Go to Previous and Go to Next buttons in your Avid editing application monitors.
• Searching for Items in the Timeline - With this release, when you search for items in the Timeline, the Find window will display the Timeline elements matching the search text.
• Mappable Segment Preview Button - You can now map the Segment Preview button. The button has been added to the CC tab of the Command Palette.
• Mapping Bin Fast Menu Commands to the Keyboard - You can map bin fast menu commands to the keyboard.
• Appending All Markers to EDLs, Cut Lists, and Change Lists - You can now append all Markers from a composition to an EDL, Cut List, or Change List. Previously, if the marker was in the composition but was not part of an event, it was not included in the output.
• Previewing In-Progress Sequences and Clips While Exporting - This feature allows you to link to a file that is still being exported (on another system).
• Video Data Rate Column Heading - You can now choose to display an additional bin column heading. The Video Data rate column displays the data rate of a linked clip.
• Support for Playback of 4 Streams of XAVC-I - This release of the editing application supports playback of 4 streams of XAVC-I in an UHD 59.94p project.

Fixed in v8.9.4: 

• Bug Number: MCET-2145. You could not export subclips as OP1a if the Use Marks option was selected.
• Bug Number: MCET-2075. While in the Effect Editing workspace, the editing application crashed when undoing changes in a Paint or AniMatte effect.
• Bug Number: MCET-2090. Even with “Copy all media” selected as the Export method for an AAF export, the entire clip was not copied.
• Bug Number: MCET-2168. Only the topmost clip of a group clip retained its LUT. All clips in a group clip now retain their LUT.
• Bug Number: MCET-2187. In some instances, you could not enable 12-channel or 16-channel in the Audio Project Settings even when “Allow 16 channel output” was selected.
• Bug Number: MCCET-2115. You might have received an “Insufficient Disk Space” error when importing multiple AVCHD clips.
• Bug Number: MCCET-2099. If you pressed the Enter key on the numeric keypad after renaming a track, the Rename dialog box would not close. Now, once you type a new name, the OK button is highlighted and pressing Enter on the numeric keypad will retain the new name and close the Rename dialog. This fix has also been incorporated into the Rename, Timeline Clip Notes, and Marker windows. The following applies when you are working with the Rename, Timeline Clip Notes and Marker dialogs:

•  
  • Pressing the Enter key on the numeric keypad will perform the task of whichever button has current focus, such as OK, Cancel, Remove, etc.
  • Pressing the keyboard Enter (Windows) or Return (Mac) key will add a line break if the cursor is active in the text area. If the cursor is not in the text area, the behavior is the same as pressing the Enter key on the numeric keypad.
  • Pressing Esc will cancel the dialog.
  • When you are in the dialog window, pressing the tab key will move the focus from one element to the next within the dialog.

• Bug Number: MCCET-2119. In some instances, if you performed a mix-down of a clip containing an audio suite effect, the editing application would hang during the render operation.
• Bug Number: MCCET-2165. You might have received an “Assertion failed” error when selecting an EVS Transfer Manager profile.
• Bug Number: MCCET-2088. (Interplay) The editing application might have hung when Media Stream Manager (MSM) was performing a rescan. This occurred if the media file folder name was in lower case. This has been fixed.
• Bug Number: MCCET-1979. (Windows) You might have seen ghosting or redraw issues when performing a trim.
• Bug Number: MCCET-2175. In a previous release of the editing application, the Master Audio monitoring fader default was -20. The correct default is 0.
• Bug Number: MCCET-2127. A grouped transcoded clip with a LUT applied would ungroup if you pressed the up or down arrow key while the clip was in the Source/Record monitor.
• Bug Number: MCCET-2128. Bullets (•) in a clip name did not translate properly in the List Tool.
• Bug Number: MCCET-2073. In some instances, pre-rendered source-side motion effects did not remain rendered when loaded into the Source monitor.
• Bug Number: MCCET-2117. The number of clips being transcoded in the transcoding process window did not always reflect the number of the actual clips being transcoded.
• Bug Number: MCCET-2108. Banding artifacts might have appeared when you transcoded XAVC Intra 100 to DNxHD (8-bit) media containing color transformations.
• Bug Number: MCCET-1902. After performing a batch reimport. .wav files might have had the wrong timecode.
• Bug Number: MCCET-2072. When performing a match frame on a sequence containing group clips brought forward from an earlier release of the editing application, you might have received a Crash Report followed by an Exception error.
• Bug Number: MCCET-2113. You might have received a “No Filler NAL unit found” error when performing a Send to Playback of consolidated clips.
• Bug Number: MCCET-1983. In some instances, when you were in trim mode and monitoring effects on a higher track, incorrect video would momentarily appear.
• Bug Number: MCCET-2133. You might have received a “FatalAbort Assertion” error when trying to play some consolidated clips.
• Bug Number: MCCET-2031. In some instances, when you enabled Sync Lock, Ripple Trim rollers did not return to their original position when audio tracks were reselected.
• Bug Number: MCCET-2139. In some instances, after relaunching Media Composer, a portion of the Timecode window was transparent.
• Bug Number: MCCET-2143. The first “Text to Find” field wasn’t automatically highlighted when you performed a Custom Sift.
• Bug Number: MCCET-2132. In some instances, the editing application did not return results when performing a search for text when “Scripts in Project” was selected as a search criteria. This has been fixed. NOTE: For this fix to work on existing scripts, you must open the script and then save it.
• Bug Number: MCCET-1981. After a batch re-import, a consolidated subclip and new master clip playback from the original master clip rather than the Mark-IN point of the subclip.
• Bug Number: MCCET-2109. Project info in the Project Selection window would sometimes show the wrong raster dimension.
• Bug Number: MCCET-2092. If the Transcode option was selected in the Export dialog, you might have received an “Exception” error when exporting a seq. with various frame rates as an AAF.
• Bug Number: MCCET-2024. In some instances, group clips would display n/a as the source name in the Timeline.
• Bug Number: MCCET-2134. In an Interplay environment, Color Correction Presets were missing in the Effect Palette.
• Bug Number: MCCET-2096. In some instances you could not cut or remove filler at the end of the Timeline.
• Bug Number: MCCET-1895. You received an “ADM_DIO” error when trying to output video to DV deck via Firewire. The Output to DV Device option is no longer supported with the Media Composer editing application.
• Bug Number: EPIC-1856. When your locale was set to German, Spanish, or Italian, a number of Media Composer dialog boxes displayed cut off text. Avid has made improvements when displaying these languages so the text is displayed properly. Also, a number of dialogs now include tool tips in the appropriate language. Avid will continue to make improvements with subsequent releases.

Notes:  

1. (Mac) With this release, the Avid DX Driver is not automatically installed when you install the editing application. If you need to install the Avid DX Driver to work with your Avid IO device, during the installation process, click the Media Composer Editing Application opener and choose the Avid DX Driver and click Continue. If you do not install the driver during the installation process.

2. ( Win ) The Avid DX Driver is still automatically installed with the Windows version of the editing application.

Documentation:  The What’s New and ReadMe documents will be uploaded to the Knowledge Base at 3:00 pm EDT - Media Composer v8.0 Documentation page.

How Customers will obtain the Media Composer v8.9.4:   The latest update to Media Composeris available in My Avid Master Accounts, the Download Center and AppMan.  My Avid and AppMan will push after the Download Center goes live at 3:00 pm EDT.

1. Customers who have already installed the latest version of Media Composer will be notified of the availability of the v8.9.4 upgrade via the AppMan. The Apps tab will also provide a link to download and install the update when desired.
2. New customers who purchase Media Composer on or after December 4th, 2017 will receive this v8.9.4 update in their Avid Master Account.
3. Customers on current valid Upgrade & Support plans can download the Media Composer v8.9.4 and either update from their Avid Master Account  or the Avid Download Center (login and password required.) after launch.
4. Customers NOT on a current Upgrade & Support contract that wish to upgrade to Media Composer v8.9.4 must purchase a new Subscription or Perpetual License.  

This does NOT install on Windows 10. You have a problem with your installer.

Worked fine here.  Did you delete old version before installing?  Are you sure your download wasn't incomplete or corrupted.

AsafBlasberg:

This does NOT install on Windows 10. You have a problem with your installer.

It installed fine on my Win 10 machine. What is happening that's keeping it from working for you?

Did you unpack it at the top level directory of a device (e.g. C:\, F:\) etc.? There are known install problems when installing it sub-directories.

Yeah, 4 GB FULL. It says "gathering information", then the window closes.

OK my issue is now resolved. Looks like corrupted install and re-download fix.

Thank you DStone.