Trouble installing with "Boards Manager"

Every time I try to install the board drivers for "ArduCAM ESP8266 UNO board" with board manager I get the errors:

Java.lang.RuntimeException: java.lang.Exception: CRC doesn't match. File is corrupted.
at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onInstallPressed$20(ContributionManagerUI.java:176)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.Exception: CRC doesn't match. File is corrupted.
at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:77)
at cc.arduino.contributions.packages.ContributionInstaller.install(ContributionInstaller.java:103)
at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onInstallPressed$20(ContributionManagerUI.java:173)
... 1 more
Is this the file or java error from the installer

What is the URL you used? I just installed it with http://www.arducam.com/downloads/ESP8266_UNO/package_ArduCAM_index.json and didn't have any errors.