Mac OSX 10.9.5
If I hit the license button it displays a serial number but it has an X on the end, otherwise I've exhausted the trial time and can't work on it anymore.
Why would a serial number be rejected?
The last serial number I could find was from Lightroom 4, but it doesn't work on this. I've updated every time a new one comes out, but don't want to buy the cloud.
We have checked your Adobe account and there are only two product registered on it Lightroom 1.0 & 4.0.
If you have bought the Lightroom 5 Version then you must have registered it with Adobe and should have the valid serial #.
Unfortunately I didn't do the v5 install and don't have the paperwork for it, I'm assuming the I.T. guy used his name for it.
I'm willing to pay for a new serial number just to get back to work, is there a way of doing that without having to go to a monthly subscription?
You can buy LR 6 (not CC) from the Products link at the bottom of any adobe.com page. Scroll down to and click on the Buy button next to the LR entry, say No Thanks to upgrading to the CC version, and change the Full to Upgrade and you should be able to buy it for $80 US. To license LR 6 you will need both the LR 6 serial number that results from your purchase and a previous LR version serial number, so make sure you get one of those from your online Products information at Adobe.com, first.
You will need to have a 64-bit system to use LR 6. You can download and install the LR CC version in trial mode for a few days (max of 30) just to make sure it'll work for you, before buying the serial number. Keep I mind that LR 6 always installs as LR CC until you license it with a serial number. You can download the trial LR 6/CC from here: Install Photoshop Lightroom and it'd probably be wise to update it to LR 6.3/2015.3 before doing too much so you get the benefit of any bug fixes, especially in the GPU handling.
That was it!
Thank you so much for your help with this matter, I can't tell you how much I appreciate your time in guiding me through the proper steps!
Have I to pay again? I guess I bought LR 4.0, I now I can't use it anymor.