install a new v1.2.1 can't login backend admin

[smallfish]

I installed a new v1.2.1 and could login the backend. A blank screen occurred.
I have checked the error log file with the following error.

2015-03-12 13:46:36 - error:  AbanteCart core v.1.2.1 Class 'Modeltoolonlinenow' not found in <b>/abantecart/core/engine/loader.php</b> on line <b>89</b>

There is no error for the v1.2.0, how can I fix it?

[Basara]

Can you please post more details:
1. your server  - php & mysql version, Linux or another os
2. Installed on hosting or on localhost
3. Installation method - softaculos, bitnami or manual installation?

Try one more time to be sure this is not file copy issue

[smallfish]

Can you please post more details:
1. your server  - php & mysql version, Linux or another os
2. Installed on hosting or on localhost
3. Installation method - softaculos, bitnami or manual installation?

Try one more time to be sure this is not file copy issue

1. debian 7, php 5.x, etc...

Actually, I find that the text file in your master_src v1.2.1 has problem. If I overwrite it with v1.2.0 and v.1.2.2 (just down from your server a few minutes before), there is no problem.
I also try to open your scripts with utf-8 editor and re-save it without BOM. Some errors are disappeared. But I have not finished to re-save all of your scripts.
Please make sure your development team use utf-8 text editor and don't save the file with BOM. (better in English environment)


For your reference, the v1.2.1 scripts are download from a weeks before and today separately. Please upload a clear v.1.2.1 to your server again.

[abolabo]

what text file you mean?
Team uses Ubuntu Linux with UTF-8 locale and IDE with default charset utf-8 too.
Please give us more details.

[smallfish]

what text file you mean?
Team uses Ubuntu Linux with UTF-8 locale and IDE with default charset utf-8 too.
Please give us more details.

I am not sure what is the actual problem. I use my utf-8 editor opens the file and save it again and upload to overwrite the default scripts. Some previous error has solved. But I don't fix all the scripts text file. I suspect the text files may save with BOM or have some hidden control characters inside.
But if I overwrite the admin/ and core/ scripts with either v1.2.0 or v1.2.2, then I can login the backend admin again.