Lightroom 5 and LR3 controls switch around.

Question

I used LR3 successfully on my iMac for years.  I upgraded to OS X 10.8.5 software, and then installed LR5.  It worked perfectly until yesterday. 
The problem: When opening LR5 and navigating to the Develop module, the control panel of LR3 appears, the new controls of LR5 are not there at all.  If I click on Lightroom top left next to the Apple icon it read Lightroom5, indicating the name of the current software being used.  The same thing happens when I open LR3, then I get the controls for LR5 when I am in the Develop module.  I have closed and re-opened LR3 and LR5.  I have turned my computer off, and back on again, and the problem persists.  I went far back and it would be a problem with images taken years ago, then with images taken a few months ago there would be no problem, and then with images taken just last week the problem shows up again.
I do not open LR3 regularly, since I purchased LR5.  I had to open LR3 to check on something and since I did that the problem started.
The problem mentioned is not consistent and it does not seem date related in terms of when the images were taken or when they were imported into LR.
Any advice would be very welcome.
Thank you.

Answer 1

I just did some testing.  I shall explain what I did and what my results
were.  I used my Canon 1DMK4 with a newly formatted SanDisk 16GB extreme
card and took some images about 5min ago.
I use an iMac with OS X 10.8.5
I always import all my images through a program called EOS Utility.  This
helps lets me customize my file names.  I have been using it for a long
time with great success in LR3 anf LR5.
The images get stored in a file in PICTURES on my hard disc, from where I
import them into LR.  These image files in PICTURES are sequenced according
to dates.
I then open LR, and import into LR, from PICTURES, using the LR import
button on the bottom left.
Here are the 4 tests with their results:
1.  I took several images around the house during the past few minutes.
The first two images I imported via EOS Utility into PICTURES, and from
PICTURES into LR5, using the Import button.
(LR3 was closed.)
I viewed the images in Library.
Then I opened the images in the Develop module.
On the left side are the LR5 presets, on the right side are the sliders for
LR3.
When I click on Lightroom top left next to the Apple icon, it reads
Lightroom5.
2.  For the second test.
The second two images I imported via EOS Utility into PICTURES, and from
PICTURES into LR3, using the Import button.
(LR5 was closed).
I viewed the images in Library.
Then I opened the images in the Develop module.
On the left side are the LR3 presets, on the right side are the sliders for
LR5.
When click on Lightroom top left next to the Apple icon, it reads
Lightroom3.
3.  For the third test:
The third two images I imported directly into LR5.
I plugged in my camera into the computer, switched on the camera, and
imported directly into LR5.
(LR3 was closed).
I viewed the images in Library.
Then I opened the images in the Develop module.
On the left side are the LR5 presets, on the right side are the sliders for
LR3.
When I click on Lightroom top left next to the Apple icon, it reads
Lightroom5.
4.  For the fourth test:
The fourth two images I imported directly into LR3.
I plugged in my camera into the computer, switched on the camera, and
imported directly into LR3.
(LR5 was closed).
I viewed the images in Library.
Then I opened the images in the Develop module.
On the left side are the LR3 presets, on the right side are the sliders for
LR5.
When I click on Lightroom top left next to the Apple icon, it reads
Lightroom3.
In all four tests the results are such that the left side and right of the
Develop module are not of the same LR, it is always a combo of the LR3 and
the LR5, never a pure LR3, and never a pure LR5.
Thank you
Gary
On Tue, Jan 28, 2014 at 5:43 PM, Gary H. R. Atherstone