It always shows an error when I hit a photo:

PHP Warning: Illegal string offset 'current_theme' in D:\myserver\zenphoto\zp-core\functions-basic.php on line 1339

I use windows7+IIS+mysql
Zenphoto version 1.4.2.4 [10045]
Current locale setting: Chinese (Simplified)_People's Republic of China.936

current theme: Effervescence+
PHP version: 5.4.4

Graphics: PHP GD bundled (2.0.34 compatible)
PHP momory limit: 128M
MySql version: 5.5.20

thanks!

Something did not work right when you installed Zenphoto. (Did you do a normal install as per the instructions?). Anyway, you can correct this by changing your theme away from Effervescence+ and then changing it back.

thank you.
when I click on the photo, it still shows:

PHP Warning: Illegal string offset 'current_theme' in D:\myserver\zenphoto\zp-core\functions-basic.php on line 1339

Have you tried another theme?

I've had the same issue on Windows. In PHP you can disable to output errors but it will still log to the log file.