Screen goes black in Sequence view but fine in Clip View

[Horseman]

In sequence view and when exporting, the screen goes black on some clips and or freezes while the audio continues... but when i switch to clip view, it plays fine... so I don't know what to change/fix to prevent this.

[borate]

There can be a number of causes.  What version of VP is being used?  Look at the left-bottom of the window.

The best way for someone to help is for you to share the project.  It's easy, can be private, and takes only minutes.  Just follow these steps...

•     Back up --- With your project on the timeline, click on MENU at the top-left.  Click FILE|BACK UP PROJECT FILES TO FOLDER.  Choose a folder and SELECT FOLDER.
•     Upload ---  Use a free server - Google Drive, MS OneDrive, etc.* - to upload the saved, numbered FOLDER.    Do NOT upload the individual VPJ or export file. 
•     Get link --- Get a public link.  Right-click the file and click SHARE. When using Google Drive, if necessary change "restricted" to "anyone with the link can view" 
•     Share ---     Click COPY LINK | DONE.  Paste that link here, or click the folder at the top-right of this forum to message it privately to me.  It won't be shared.

          *    Before uploading, right-click the folder, click PROPERTIES.  Look at the File Size to confirm that it's not too big for the free space on the server.

You can also test the current release.  For licensed users upgrades are free for up to six months from purchase date.  After that, VP will continue to fully function but a fee will be required in order to register the newest.  Retain your old install file and registration info.