I just installed SuiteCRM Version 7.9.8 and the first page that I went to (import accounts)
http://newcrm.mytestdomain.com/index.php?module=Import&action=Step1&import_module=Accounts&return_module=Accounts&return_action=index
shows this error message.
I did a quick Google and found https://github.com/salesagility/SuiteCRM/blob/v7.9.4/modules/Import/language/en_us.lang.php#L197
This shows a line:
‘LBL_IMPORT_CUSTOM_TITLE’ => ‘Many applications allow you to export data into a Comma Delimited text file (.csv) by following these general steps:’,
The version that I just installed of SuiteCRM/modules/Import/language/en_us.lang.php does not have a line for LBL_IMPORT_CUSTOM_TITLE’
It looks like someone removed the language definition without removing the reference in the code