Is installing multiple versions supported?

bob.f · 10-05-2019, 09:22 AM

Hi,

I recently upgraded from 3.48 to 4.0 and have decided that it was a bad idea. Not because of anything inherently wrong with 4.0, it's more that I like to ease myself in to new major releases over a period of time, whilst still having access to the previous version.

What I'd like to do is to have 3.48 and 4.0 installed concurrently, pointing to the same book library. Obviously I would only run one at a time.

Is what I want achievable? If so my plan is to:

1. Back up book library, including metadata* files

2. Install 3.48 (into different program folder!)

3. Create separate shortcut to start 3.48

I'd also like my plugins and as many settings to be the same in each instance.

thiago.eec · 10-05-2019, 09:33 AM

You can have two versions if one is 32bits and the other 64bits. Yes, they can point to the same library.
Also, you can use (not really install) a portable version. In this case, the library must be inside the portable folder.

bob.f · 10-05-2019, 10:31 AM

Quote:

Originally Posted by thiago.eec

You can have two versions if one is 32bits and the other 64bits. Yes, they can point to the same library.
Also, you can use (not really install) a portable version. In this case, the library must be inside the portable folder.

Thanks. What is the reason for not installing two 64 bit versions?

thiago.eec · 10-05-2019, 10:53 AM

Quote:

Originally Posted by bob.f

Thanks. What is the reason for not installing two 64 bit versions?

I don't actually know the technical reason.

theducks · 10-05-2019, 10:58 AM

Quote:

Originally Posted by bob.f

Thanks. What is the reason for not installing two 64 bit versions?

The would use the same (program) path and registration keys

Nothing stops you from using Portable with the PC Library. You just can't have it default there. (IIRC Portable is only 32 bit, but that would still allow you to have an alternate version at hand)

BetterRed · 10-05-2019, 04:55 PM

↑ ↑ ↑ ✔

The Windows installer uses the registration keys (product code etc) to prevent multiple versions of the same program being installed - the 32bit and 64 bit versions have different registration codes, hence they can co-exist.

BR

10-05-2019, 09:22 AM	#1
bob.f Connoisseur Posts: 61 Karma: 99068 Join Date: Nov 2017 Device: N/A	Is installing multiple versions supported? Hi, I recently upgraded from 3.48 to 4.0 and have decided that it was a bad idea. Not because of anything inherently wrong with 4.0, it's more that I like to ease myself in to new major releases over a period of time, whilst still having access to the previous version. What I'd like to do is to have 3.48 and 4.0 installed concurrently, pointing to the same book library. Obviously I would only run one at a time. Is what I want achievable? If so my plan is to: 1. Back up book library, including metadata* files 2. Install 3.48 (into different program folder!) 3. Create separate shortcut to start 3.48 I'd also like my plugins and as many settings to be the same in each instance.

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10-05-2019, 09:33 AM	#2
thiago.eec Guru Posts: 929 Karma: 1177583 Join Date: Dec 2016 Location: Goiânia - Brazil Device: iPad, Kindle Paperwhite	You can have two versions if one is 32bits and the other 64bits. Yes, they can point to the same library. Also, you can use (not really install) a portable version. In this case, the library must be inside the portable folder.

10-05-2019, 04:55 PM	#6
BetterRed null operator (he/him) Posts: 20,583 Karma: 26954694 Join Date: Mar 2012 Location: Sydney Australia Device: none	↑ ↑ ↑ ✔ The Windows installer uses the registration keys (product code etc) to prevent multiple versions of the same program being installed - the 32bit and 64 bit versions have different registration codes, hence they can co-exist. BR