What errors, Adhy? What build are you using and what plugins are you trying to update?

I'm update... Platform > Plugin Update (All) > Event Update>Error 500

after uploading the event plugin and getting the 500 error please delete from plugins folder and then you will be prompted from the admin panel to update the database once done re-upload the event plugin and all should work

if I remove the plugin, and will be required .. I can not upload with FTP, I will try to install manually, I will be back with the results

I found after an update and a 500 error, I just went to the database and set the plugin in ow_core_plugin(i think)  to not active (0) then I would be prompted for the db update.
Then when my core was updated all was fine...

SINCE I UPDATED MY WEBSITE EVERYTIME I GET AN EMAIL NOTIFYING ME THAT MY CRON JOD IS DOING SOMETHING, WHEN I OPEN UP THE EMAIL AND CLICK ON THE LINK I JUST GET THIS - Error 500
Internal Server Error. WHAT IS WRONG WITH OXWALL, WALL.FM WAS MUCH BETTER THAN THIS?

Quote from Stan SINCE I UPDATED MY WEBSITE EVERYTIME I GET AN EMAIL NOTIFYING ME THAT MY CRON JOD IS DOING SOMETHING, WHEN I OPEN UP THE EMAIL AND CLICK ON THE LINK I JUST GET THIS - Error 500
Internal Server Error. WHAT IS WRONG WITH OXWALL, WALL.FM WAS MUCH BETTER THAN THIS?

each time you do something on the base code, please backup your site first

even when the main pages of the site show error 500 have you tried accessing the admin area? yoursite.com/admin/ you should still have access, the errors are usually just because other plugins need to be updated

I cannot get back on my website, when I put my url in it takes me to my signin page but it doesn't look right, and when I sign in, 5oo error comes up, and when I spoke to my host they told me that a file is missing, all this happened when I updated my website and plugins, can anyone please help?

I can not get into your pages ...

Stan, can you ask your hosting company to specify what file is missing? Ask them to check into the error_log and provide us with the error message that causes the 500 error. Only with that information we will be able to suggest you a solution.