It looks correct, so it needs to track it down. Plz PM me with your CPanel and Dolphin admin access.

I looked at converting it for a client that had a license.  Most of the scripts are written in sql statements that are outdated.  He did not use Dolphin functions at all.  I could not get it to work after trying to convert the sql statements.  Too busy at the moment to look at it now.  The programmer did not use proper coding methods.

Running 7.3.5   Timeline URLS are (for example):   https://www.WEBSITENAME.com/m/photos/get_image/browse/a9f6f8ad46b279e640710fe27d0e5629.jpg

Hello callum!   So what version of Dolphin do you have and what image URLs are shown for the timeline via the developer console? You may PM me with access to your Dolphin to check.

I have members who upload one or two photos a day and yet their photos do not show in their timeline or the homepage outline. One member uploaded a photo today, it's listed in the photos page but no in their timeline or outline.

Yes it was resolved. If a member posts multiple photos within a certain time frame (maybe minutes) only the first three photos will appear in the timeline. I actually like this feature because it stops members flooding the timeline with photos and literally hijacking the site. If the member insists on seeing their photos appear, get them to post three at a time (say) an hour apart.

Was this issue ever resolved? I still have some members who upload photos but the photos do not show in the member's profile timeline or the site's homepage outline.

i will try to find any help if i can upload it 

Hi all!   Well, the case from Jonnaklasine may mean that some cache file has been generated with the error in syntax, but it should be tracked in the log. Maybe you need to try the PHP file with the error and check how it will be screened. The case from 

Error 500 is a server error.  500 errors can be caused by php; I have seen it so that is why I mention it.  500 errors can also be hard to track down.   I am guessing you have modules that haven't been updated in the market.  Most modules compatible with Dolphin 7.3.5 will work with 7.4.x by changing the class constructor.   Make sure you have a lower version of php for Dolphin 7.2; if php 7 is set, Dolphin won't work and could cause the 500 error; see first paragraph above.