Why getting syntax error from ldifde.ex while importing .ldf file for extending schema

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LDAP

Hi,

I don't know why I am getting following error again and again :

> There is a syntax error in the input file Failed on line 1. The last
> token starts with '1'. 0 entries modified successfully.
Or following error :

> Add error on entry starting on line 18: No Such Attribute
>
> The server side error is: 0x57 The parameter is incorrect.
>
> The extended server error is:
>
> 00000057: LdapErr: DSID-0C090FB4, comment: Error in attribute
> conversion operation, data 0, v3839
>
> 0 entries modified successfully.
Or following is also appearing ..

Add error on entry starting on line 18: No Such Attribute
The server side error is: 0x57 The parameter is incorrect.
The extended server error is:
00000057: LdapErr: DSID-0C090FB4, comment: Error in attribute conversion operation, data 0, v3839

0 entries modified successfully.
An error has occurred in the program
No log files were written. In order to generate a log file, please
specify the log file path via the -j option.
I have executed sample file over again and again which was perfectly imported in last days. I have made no changes but still I am getting this error.

I am using following way :

https://i.stack.imgur.com/ZvjzF.png

Can any body help to solve this?

What I have tried:

I almost have tried all ways to solve this.
I first realized that it couldT be a long path problem. Because It was importing file from Temp directory ( i.e. GetTemp().Path , which points to C:\User\local\.....)
Sometimes it worked , and sometime it failed.

Hence it wasnt a path problem. I also tried to modify file contents. but nothing worked.