There, Hi There, I recently installed e-newsletter on my

Hi There,
Hi There,

I recently installed e-newsletter on my multisite network for use on a single site. During the install process something weird happened - I got a message "oops - we cant do that" or something like that. This process caused some of my other plugins to disappear eg - events+. I deleted the e-newsletter dir and reinstalled from the wpmu dashboard and it went OK. I also reinstalled events+ and all my old data was still there.

A look at the debug.log revealed something going on:

[19-Jan-2016 06:35:47 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:35:49 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:35:49 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:35:51 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:35:51 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:35:51 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:35:51 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:37:25 UTC] PHP Notice:  Undefined variable: mode in /var/lib/wp_maxi/wp-content/plugins/e-newsletter/email-newsletter-files/page-settings.php on line 151
[19-Jan-2016 06:37:38 UTC] PHP Notice:  Undefined variable: mode in /var/lib/wp_maxi/wp-content/plugins/e-newsletter/email-newsletter-files/page-settings.php on line 151
[19-Jan-2016 06:38:29 UTC] PHP Notice:  Undefined variable: mode in /var/lib/wp_maxi/wp-content/plugins/e-newsletter/email-newsletter-files/page-settings.php on line 151
[19-Jan-2016 06:38:44 UTC] PHP Notice:  Undefined index: bounce_email in /var/lib/wp_maxi/wp-content/plugins/e-newsletter/email-newsletter-files/builder/class.builder.php on line 663
[19-Jan-2016 06:38:46 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:38:46 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:38:46 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:38:46 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:38:48 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:38:48 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:38:50 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:38:50 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:38:51 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:38:51 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:38:53 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:38:53 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:38:55 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:38:55 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:38:58 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:38:58 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:39:22 UTC] PHP Notice:  Undefined index: bounce_email in /var/lib/wp_maxi/wp-content/plugins/e-newsletter/email-newsletter-files/builder/class.builder.php on line 663
[19-Jan-2016 06:39:24 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:39:24 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:39:24 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:39:24 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:39:26 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:39:26 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
[19-Jan-2016 06:39:28 UTC] WPMU DEV error: Upgrade failed - error 1
[19-Jan-2016 06:39:28 UTC] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed...
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Could you please point me in the right direction to solve this?

Thanks - Mark